Some Right Flap Work

January 8, 2012

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Oh wow, it’s the first post of the new year! (Too bad it’s already January 10th…yeah, yeah, I’m posting a few days after this build session actually happened.)

I got a little bit of tedious work done on the right flap before being called over to a coworker’s house to help with his brand new TV. Here are most of the right flap parts.

all the flap parts after matchdrilling (last session). Time for deburring and dimpling.

One of the things I noticed is that I forgot to enlarge these holes to #30.

Before.

After.

Next, I deburred all the spar holes, and got to work on edge finishing. This includes all the lightening holes, which are a PAIN IN THE BUTT to deburr. Because I have an AWESOME sister, she got me some good 1″ scotchbrite wheels. Previously, I had bought a bag of 50 “general purpose” wheels from Nebraska Surplus, but they were a little soft for work on the RV.  My sister got me some of the 6A-Medium wheels, which did the job perfectly.

The correct grade on the left 6A-medium. Don't get the general purpose ones on the right. They are too soft.

After edge finishing, I decided to get the spar set up for a little countersinking session. If you remember from the other flap, the bottom skin is dimpled, so the spar has to be countersunk so the hinge (on the other side of the spar) isn’t affected.

Set up, just need to cleco the hinge in place.

You can see here, I've clecoed the hinge in place and countersunk "a few clicks" deeper than flush.

I don’t know that I’ve ever shown this, but back on the empennage, I made a couple scribe lines on my microstop countersink cage to indicate perfectly flush for an AN426AD3- rivet.

Marked for a flush rivet.

Here are my "few clicks deeper." Four clicks work for me. YMMV.

After countersinking all the holes…

Pretty countersinks.

Oh man. I need to deburr the back of this soft hinge.

Burrs! Burrs!

Sorry about the bad picture, but this is after deburring.

With the blur, you'll just have to trust that it's properly deburred.

1.5 Hours. I’m struggling to get outside even for 30 minutes each night. Tonight, I set a reminder on my phone to buzz at me every night. Maybe it will work. (Nope, it didn’t work tonight, but I managed to post this work session. Maybe tomorrow.)

Until next time.

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Posted by Andrew

Started the Right Flap

December 29, 2011

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So I’m writing this a few days in the future, so bear with me if I can’t recall everything in detail.

Today, Joe came over to assist in some airplane building, and I figured it would be a good time to start in on the right flap.

First, though, I spent a little time with the aileron bellcrank and pushrod. I adjusted the rod ends to equal length on the screw ends, then turned each a turn at a time until I got the aileron perfectly aligned with my “alignment stick.” (BTW, “alignment stick” reminds me of a disciplinary tool used by catholic school nuns…shudder.)

Here's the large view.

And a closeup. Can't get much better than that.

Oh, and with the rearrangement of the exercise room and guest room upstairs, I’ve been…”strongly encouraged” to get the airplane parts out of the living spaces.

Notice she waited until after I put a ring on it to tell me to get my airplane crap out into the garage. Just kidding, she’s wonderful, and I’ve been meaning to get things hung up in the garage for awhile.

Here’s the horizontal stabilizer hung (very securely) with some red hooks through the pegboard and into some 2x4s.

That's the largest piece that was upstairs.

Joe showed up, so we started gathering the left flap parts. Here are the skins, the spar, and some of the ribs.

We pulled the blue vinyl off everything instead of worrying about doing lines with the soldering iron. I think I've given up on that for good.

We followed the directions carefully (except for the part where they want you to edge finish first. I like to do it before final prep) and started clecoing parts together and matchdrilling.

Here's an action shot of Joe working the cleco pliers. (I'll need a second pair if he's going to come over and help a lot.)

When we started working on the interior ribs, all hell broke loose. I had been carefully explaining that we’re building the right flap, so everything is reversed from the plans. All of the flanges on the left flap pointed left, so we assumed the all the flanges on the right side faced right. Well, the holes weren’t lining up correctly. We sat for a few minutes and finally figured out that maybe I built the left flap with the right flap’s interior ribs, and that I could probably swap them here, too. I made a mental note to confirm this with Van’s support after the holidays when Joe noticed this note RIGHT IN THE MIDDLE OF THE FLAP DRAWING.

Whew. That explains it. Glad I didn’t mess this up, too. We flipped the flanges over (so they faced the left) and all the holes magically lined up again. Build on!

A big note, right under my nose.

After matchdrilling the ribs and skins to the spar, we moved on to the hinge.

Picture below is the same procedure I used on the left flap, carefully constraining the flap to make sure there was perfect alignment.

I used the four clamps in between each hole to maintain perfect alignment. After a few holes, we'd remove the clamps and verify we had good hinge movement.

As we progressed down the flap, we got a little braver, and stopped using the sideclamps. I had C clamps about every 10 holes, and drilled a hole next to the previously drilled and clecoed hole. We maintained perfect alignment the whole time, and it saved a ton of time not having to remove 4 clamps, check movement, add 4 clamps, drill 4 holes, cleco 4 holes, and then remove the 4 clamps.

In no time, we had the right hinge drilled.

We're moving right along.

Finally, we stuck the top skin on and Joe got busy matchdrilling.

Nice shiny top skin.

While he was busy doing that, I started fabrication on the flap angles (I forgot the part numbers, sorry).

I didn't make the final cut on the angle yet, I'll do that later.

After a little marking and bending…

Marked and bent. (Aiming for 6.3° is silly. It's much easier to bend it a little, then check fit against the flap.)

The first try, I overbent it a little.

See the wedge-shaped gap there?

After a few more tweaks, it was perfect, so we started matchdrilling the angles to the ribs/spar.

I don't remember the significance of this picture. Must be the matchdrilling...

Then, we positioned and drilled the holes for the K1000-4 nutplate.

Nicely done, Joe.

Then, we disassembled everything and THOUGHT about started preparation for priming.

Want to start the tedious prep work?

No way, it’s lunchtime, and Joe had to go meet his better half.

3.0 hours with Joe today. Since we really didn’t work simultaneously on anything, I’m going to count it as straight time. I’ll count his time as double when we aren’t watching each other work. See you guys next year!

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Posted by Andrew

Aileron Mounting and Flap Seal

December 28, 2011

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Well, I have all week off this week, and due to travel, random other activities, and general stay-at-home-dad responsibilities, I only managed to start working on the airplane today, Wednesday. My original plan was to get in 40 hours on the airplane this week, but I don’t think that’s going to happen, especially since I only managed to fit in 4 hours today. Anyway, I (we) decided that I’m going to start cleaning out some of the airplane parts from our workout room. In that light, I decided it was about time to start storing the right aileron on the right wing.

So, I pulled out the aileron plans and started studying the hardware callouts.

This is for the outboard end. No spacer needed.

Here's the inboard side.

I think this is the hardware for the outboard side.

And the hardware for the inboard side, plus the AT6-058 tubing to make a spacer.

I did need to enlarge the weldment bolt holes to the proper size, so I grabbed an AN3 bolt and measured it’s diameter.

Looks like .186"

I tried a few bits and found that the proper drill bit for a AN3 bolt is a #12. Later on, I found out that the proper drill bit for an AN4 bolt is a 1/4".

One of the things I have on my list of things to do is to countersink and set the lower inboard rivets on each of the aileron hinge brackets.

At first I was kind of skeptical that you needed a flush rivet head here, given all the room in the picture…

There isn't anything even remotely close.

…but, after swinging the aileron through its full motion, I noticed that full up (trailing edge up) aileron has minimal clearance there.

Those Van's guys are smart.

Back to the hardware. One of my stocking stuffers from the girlfriend FIANCÉE was this wonderful double-drive ratcheting screwdriver that you’ve all seen on the commercials recently. I have the snap-on one, which is REALLY nice, but this one is great for fast (double drive!) fastener insertions. I’ll use the snap-on when precision counts, and the Kobalt where speed is my friend.

DOUBLE DRIVE!!!

Anyway, I used that with a socket on the end to quickly secure some of the aileron attach hardware.

I’m not sure what order these pictures are in. Here’s me cutting some of the aforementioned AT6 tubing for a spacer.

Action shot!

I don't think I got the edge of the spacer just right when deburring. I might redo this. (This was also the only place I had to make a washer substitution. I used a skinny washer to the right of the aileron attach bracket.

Here's the after shot of the outboard end.

Hey, look at that! It looks like an airplane!

Okay, here, the ADD set in, and I needed to so something else. Time to pull out the flap seal. After edge finishing and scuffing…

Tada! Time for cleaning and priming.

Don't let the sun fool you. It was freezing out today.

Serisouly, there pictures are way out of order. Here are my rivet counts after I was done with riveting the flap seal on.

29 total rivets set, 1 drilled out.

I didn’t get a good picture, but I didn’t get the rivet gun lined up right, so the edge of the set just chewed through the rivet head.

Anyway, a nice clean drill-out.

Here’s the finished product.

29 rivets closer to the end.

Next, I was trying to figure out how to line up the aileron, so instead of copying some other people’s cleco and a straight edge trick, I decided to do it by the book. Grab a straight piece of wood, drill the holes for the tooling holes in the wings, then line up the aileron with two tangential lines.

Easy enough, right?

Well, kind of. Turns out, I had used one of the tooling holes as the attachment hole for the angled bracket for the wing stands.

See? 1/4"

The upper one is still #21, though.

So, I drilled two holes at the appropriate distance for an AN3 bolt, then drew my tangential lines, then enlarged the lower one to 1/4″.

Worked well for me.

But I quickly realized that with the wing nose-down, the aileron is NOT neutrally balanced. Since there is a moment on the aileron, if I clamp it to my piece of wood, it’s going to bend the piece of wood for a false reading. Looks like I’ll have to actually construct the bellcrank and pushrod.

So, I fished out the bearing from beneath my workbenches and cleaned off the tag.

Also, I found the bellcrank attach brackets.

And cleaned off more tags.

I was trying to locate the AN3-6A bolts that are called out for the bellcrank attach brackets, and I couldn’t find them anywhere.

After about 30 minutes of build time wasted, I remembered that I had one more bag left. I thought this was just the close tolerance bolts, but alas, there were plenty of other AN bolts in there.

This bag hid from me for 30 minutes.

So then I spent about 20 minutes sorting though these bolts.

There are some AN3-6A bolts on the left there.

I have some residual confusion about bolt length, though. Here’s a known -4A and -7A.

Makes sense.

Here's the -6A. This is all good.

Oh, I guess we’re jumping around in pictures again. I’ll bring up my confusion later.

I got the brass bushing out of my storage box and deburred the edges a little.

Shiny is scotchbrited, dull is out of the box.

After inserting into the bellcrank….

Looking good, needs to be drilled to final size, though.

It just barely sticks out both ends of the bellcrank as designed.

Perfect length out of the box.

I did need to drill them out to a #21, though, for the long bolt that goes through them.

This was more difficult than I imagined it to be. I did use wood to clamp these in the vise, and lots of cutting oil for the drill bit.

So here’s where my confusion came back in. I was supposed to use an AN3-32A bolt, but when I held up the longest bolt I could find, (and after verifying that the longest bolt was the appropriate size for the assembly), I held it up to the bolt gauge thing, and it told me it was an AN3-28A. Hmm. I’ve got my three threads on the outside of the nut, so I guess I’m okay, but I’m still confused.

Anyway, now that I’ve got the bellcrank available, I need the pushrod.

Here's a closeup of the pushrod I'm going to make.

Here's the rest of the W-818 assembly.

After carefully measuring and cutting, here are my two pushrods.

One left, and one right.

After drilling two 90° #30 holes…

You can also see an AN470AD4-12 rivet.

Then, after some rivet squeezing and priming, I propped it up on my handy-dandy cleco storage units for drying.

It's like watching paint dry.

A picture of the rivet shop heads.

Oh, and one more spacer for the actual attach point for the aileron.

More spacers!

Here’s the attachment for the aileron.

This angle is weird because I've flipped the entire aileron up and around its axis.

But, after I got the pushrod installed…

Looks like an airplane!

Here’s the bellcrank area. Looks like I dripped some primer in there.

Van's tells you to prime the inside of the pushrods, too. So I poured some in there, then tried to pour it out. None came out until I installed it here, and some seeped around the edge of the pushrod fitting. Oops.

Hey, not to far off for the first try.

Within a degree or so...I'll fix this first thing tomorrow.

4 hours total today, 3 of which were on the ailerons, 1 of which was for the flap brace. 29 rivets set, one drilled out. Yahoo!

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Posted by Andrew

Riveted Right Aileron Gap Fairing

December 19, 2011

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Whoa, I’ve got a few exciting days in a row building up. Well, not days, but posts.

Tonight, I knew if I kept focused, I could get from drilled aileron gap fairing to riveted aileron gap fairing.

I’ll break it down.

5 minutes of edge finishing (thank you scotchbrite wheel).

5 minutes of hole deburring.

5 minutes of dimpling (only the upper half of the aileron gap fairing).

5 minutes of cleaning inside

2.5 minutes to prime one side

5 minutes filling girlfriend’s tires

2.5 minutes priming the other side

5 minutes filling my tires

10 minutes shooting the AN470AD4 and AD5 rivets.

A cleco in every other hole.

A closeup I guess.

A wonderful shop head.

An even better shop head.

After the whole row of AN470- rivets.

More shop heads, I guess. I need to hit that one on the upper left a few more times.

10 minutes to squeeze the AN426AD3-3.5 rivets.

These -3 rivets were a little small, so I used -3.5.

After squeezing a few, I realized that maybe they stipulated -3 rivets so the heads would be small to avoid the top of the aileron skin. After freaking out for a minute, I realized that the tolerance here would have to be more than the difference between a -3 and -3.5 rivet.

Shop head picture.

Here's the whole row done.

Anyone keeping track of the minutes?

Oh yeah, 5 minutes to admire my (no drilling out!) riveting.

1.0 hour, 28 rivets shot, 27 rivets squeezed, for a grand total of 55 rivets.

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Posted by Andrew

Riveted Some Things On the Right Rear Spar

December 14, 2011

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Tonight was a pretty exciting night. Not only because I got the flap brace and aileron gap fairing matchdrilled, but because I got to set 32 rivets I had previously skipped (see my previous rear spar riveting post from almost a year ago).

On to the pictures…

Here I am matchdrilling the flap brace.

I admit, this was a little posed.

Next, I matchdrilled the two aileron attachment brackets. For both brackets, I had to do a little filing to make sure the top edge fit nicely in the radius of the rear spar.

This is all that was needed.

After getting everything on the rear spar matchdrilled, I removed the components and also took the lower skins off. Now I’ve got great access to the rear spar rivets I’d previously missed.

I didn’t really miss them, it’s just that the spar was facing down, and I didn’t have a good way to squeeze them with my no-hole yoke. I could have shot and bucked them laying on my back on the floor, but I knew an opportunity like this was coming soon (well, almost a year later).

bottom skins are off, time for some riveting.

This bottom rivet was one of the troublesome ones before. I shot this from the top side, and it was a piece of cake.

I think there were about 11 of those or so, with 6 more on the rear spar reinforcement bar. Next, though, was this dreaded rivet.

If you remember from that last post, I had butchered this pretty badly 2 or three times, and Van’s had responded that a -5 rivet would work well here if the hole was too enlarged. (They also said a slightly undersized rivet head would be okay if you could engage the entire circumference of the hole.)

Yikes.

First drilled with #40 to make sure I'm on the center.

Then to #30.

Pretty good drillout.

The enlarged hole wasn’t really that enlarged, so I made the executive decision to stick with the -4 rivet.

This time, I set it from the top. Yes, there is a tiny smiley, but it's not worth trying to fix again.

asdf

And a nice shot head on the other side. (Sorry, had to use the flash to see.)

Finally, I deburred and riveted the aileron attachment brackets onto the spar.

After rechecking the plans, I noticed the lower rivet here should be flush. Really? Bummer. I'll have to get a threaded attachment for my countersinks to reach this one.

Same outboard bracket, this time the rib rivets.

Lot's of good shop heads.

Yup, there it is on the lower left. (I didn't show the legend, but this is a flush head).

Whoa, same on the lower rivet here (this is for the left wing, so it's mirrored for the right).

More riveting here.

Nice.

Umm, I don’t know why I uploaded this pictuer…

Redundant much?

1.0 Hours, 32 rivets, one messed up rivet from almost a year ago, finally drilled out. (I’m splitting up the hour into 30 minutes on the ribs, 30 minutes on the wing.)

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Posted by Andrew

Right Flap Brace and Aileron Gap Fairing

December 12, 2011

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Alright, before we get too busy getting excited about two posts in a row, let’s talk a little about Christmas. This year, we decided to do a Christmas tree. A few Saturday’s ago, we ventured out into the cold (it was pretty warm) and cut down our own tree (no we didn’t, we bought it from the farmer’s market).

Anyway. There are three interesting pictures from the day.

Jack, incredulously watching us decorate the tree.

Ginger's falling asleep. OMG this is the closest she's been to feather's since FEATHERGATE.

Finally the tree.

Now it needs some presents. Send me some presents.

Just kidding.

Let’s get back to building, shall we?

Tonight, high on the excitement of flipping the right wing over, I decided to get some more aluminum down from storage.

These two pieces are the Aileron Gap Fairing and the Flap Brace.

Part numbers shown for the right wing.

Turns out these have been in the garage for over a year now, so when I pulled off the blue vinyl, there was some residual…well…residue.

A little acetone fixed this right up.

I scuffed these up quickly (I’ll do this more completely when I’m about to prime) and got out the right aileron brackets. The top of the inboard bracket was interfering on my wing (like everyone else’s before me), so like them, I ground down the top corner a little with the scotchbrite wheel.

Here's the corner I ground down.

And clecoed in place.

The outboard bracket clecoed in place.

Here’s the flap brace, looking inboard.

I'll matchdrill both sides, but only rivet the brace to the spar now, the skins will come later.

The flange on the inboard most section is sitting a little funny, so tomorrow, before matchdrilling, I’ll see if I can’t straighten this out a little.

Crooked flange.

Flap brace looking from inboard to outboard.

Then, I clecoed on the aileron gap fairing.

With no trimming, look at how nicely everything lines up. Man, this is easy.

30 short minutes tonight, but it’s better than nothing.

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Posted by Andrew

Constructed Wing Cradle

December 11, 2011

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Well, I needed something exciting to do on the airplane, so, instead of starting in on the right flap, I decided to work on the wing cradle.

Even though the right wing is the only one complete (well, kind of complete), flipping it over into a cradle will free up some room.

Let’s take a look at the intended final product.

Leading edge traces.

First up, I need two 3′ by 2′ end pieces.

Below, you can see I have one of the end pieces on my workbench with a couple leading edge traces. Since the spars are about 8″ wide, I used simple math (well, simple if you aren’t an engineer; I made it complicated) and left five inches from the edge, 8 inches for each spar, then 10 inches in the middle.

Leading edge traces.

After some master woodworking...

Then, I laid my other endpiece underneath that one, and marked the edges of the cutout so my spar reinforcement bars would fit well.

Done.

Per the plan, we need a little reinforcing at the top, and a 2×4 for the bottom.

Done and done.

Then, with a little more woodworking, I used my aileron bending brake and cut six two-foot-long angled support pieces, assembled pretty obviously per the plans and picture.

Whoa, this thing looks serious now.

With a little carpeting...

Then, I spent about an hour getting the right wing into the cradle all by my lonesome. I was extrememly methodical, and thought through long and hard about how I was going to do this.

Yes, I could have had a buddy over to do it in 5 minutes, but no, I had to make it difficult for myself.

Anyway, if you remember, my wings were supported by two pieces of angle supported by a 3/8″ bolt through the actual stand, and a threaded rod supporting the other end of the angle. The outboard side of the wing was bolted to the angle, so all I had to do was unattach the threaded rod portion, stand at the wing root, and rotate the wing. The outboard side pivoted around the wing stand bolt, and I was able to gently set the inboard side of the wing in the cradle as shown below.

Then, I moved to the outboard side to undo the last two bolts, and gently lower that side.

Easy peasy. (Next time, I’m getting a buddy to help.)

Before moving the stand back onto the MDF piece on the floor, I took the other spar off the stands, tipped each side of my stands up and took off the right wing stands.

Now both wings are a little closer to the center of the stall, giving me more room by the workbench, and the girlfriend a little more room with her car door. (That’s always a good thing.)

I know the garage is messy, but here's the right wing in the cradle.

One last shot.

Nice.

Time to get working on the lower skins. Well, let’s do the aileron gap fairing and flap brace first.

2.5 hours with all the construction and moving around.

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Posted by Andrew

Finished the Left Flap

November 26, 2011

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Whoa, two days in a row! With just a couple hours of riveting left, I knew I was close to finishing when I got the bottom skin on yesterday, so I made some time today to finish up.

Once again, I wasn’t in the habit of taking a lot of pictures, though, so you get some intermediate ones, and a couple finished pics.

After getting some of the rib-to-skin rivets set, I clecoed the spar in place with the hinge along the bottom edge, then flipped the flap so the top skin was up, and did my every-other-rivet taping.

I couldn't get a slick way to rivet the last two rib rivets at the bottom of the picture, so I followed the plans and used blind rivets.

Before actually riveting any of the skins on, I made sure to do the blind rivets for the spar-to-rib rivets.

These are all LP4-3s.

Whoa. I ran out after the exact correct amount. I’ll have to order more before moving on to the right flap.

Empty...

Then, I totally stopped taking pictures, but finished the flap.

Nice and shiny. No dings at all.

The bottom is nice and shiny, too, and only a few very small dings.

I’m starting to realize that I’m going to have dings in the project, and they are going to be visible. I think the whole polished airplane thing went out the window, so hopefully by the time I paint the airplane, all the dings will be filled, and you will be none the wiser.

2 hours today, and 164 total rivets all over the place. Whew.

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Riveted Left Flap Lower Skin

November 25, 2011

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Whoa, Andrew’s building again. I realize that if I make that explanation every time I post, then someone clicking through the posts without seeing the date stamps is going to be a little confused. Anyway, I got a fair amount done today, and I’m feeling pretty motivated to keep some progress going.

Let’s get to the pictures.

First up, I have a whole bunch of primed parts, and I felt like clecoing some together (always helps the motivation to see assemblies rather than parts).

Here’s the left lower flap skin along with the ribs. I was very careful to review the plans to make sure I got all of the flanges pointing the correct way.

And yes, the flap is upside down here.

Here it is right side up. The plans or instructions don’t really give you a lot of hints on when to set which rivets, so you kind of have to think ahead. More on that later.

It's starting to look like a flap.

Next up, let’s get the top skin ready. First thing, I removed the blue vinyl and deburred all the holes on this side (I may have de-blued last time, I can’t remember).

Deburred and edge finished. Piece of boring cake.

Next, I started to de-blue the top of the skin, but I wanted to put some clecoes in the aft portion of the skin so the skin wasn’t resting on the workbench. This worked out pretty well for me.

Scuffed and ready to flip for more deburring.

I'm about halfway through pulling off this blue vinyl. It was cold out (so why do you have the garage door open?) and the vinyl adhesive was extra sticky.

After more deburring, I broke out the hand squeezer and put some new blue tape on my dies.

Ready for action.

Of course, I didn’t get any pictures…I’m out of practice…

I did take the skin outside after some more prep and get a coat of primer on it. While that was drying, I turned my attention back to the ribs and the bottom skin built-in spar.

I set 4 of these AN47AD4-4 rivets. Pretty simple here to squeeze these.

Then, I riveted on the nutplate on the left side of this picture, and riveted each of the AD4- rivets shown.

Great manufactured heads.

Great shop heads.

Then, I backed up a few steps and riveted the other angle bracket onto the inboard half of the spar. The instructions have you do this pretty early, but I waited until everything was primed.

Same thing. Good manufactured heads here.

And good shop heads here.

Once the top skin was dry, I brought it back inside and got everything 50% clecoed.

This part is exciting, there's riveting coming soon!

After putting some of the AN426AD3-3.5 rivets in, I put tape over each of the heads, and riveted.

Ready to rivet.

Then, I took out the remaining clecos, put more rivets in, moved the tape to the unriveted heads, riveted, then removed all the tape.

(Also, I cleaned up the skin before taking this picture, because I want it to look good for you guys.)

Wuhoo! 100 rivets.

I followed the directions mostly, except I was able to buck the 3rd rivet up on the left side. The plans allow you to use blind rivets there if you want.

Blind rivets in the aft two holes.

Wuhoo. 2.5 hours, 100 rivets. I’m back at it!

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Deburred, Dimpled, and Primed Left Flap Lower Skin

November 16, 2011

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Well, I’m still trudging along at this thing. I need to start getting my butt in gear a little more. Gotta finish this flap then get working on that other wing…

Tonight, I decided to do a little prep work for the left flap. The pictures are kind of lame, but deburring and dimpling are starting to get a little old.

Here's the left flap lower skin after deburring, dimpling, and edge finishing.

After dimpling everywhere I could with the hand squeezer, I had to get out the c-frame for 6 holes. After that, I thoroughly cleaned the lower skin, and dragged it outside for some priming. Here it is back inside for drying while I go upstairs to sleep.

Notice how I skipped the debluing with lines and such. I think I saved myself an hour here. I'll probably continue this wherever people (except readers) won't be able to see it.

Lastly, I pulled off the interior blue vinyl from the left upper skin, then immediately decided that sleep was more important than more deburring. Maybe I’ll get some more done this weekend.

I am getting close to assembly on this flap.

I should be more excited…but I’m tired tonight. Sorry, everyone.

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Posted by Andrew

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