Shop climate control update

I ordered the Tosot mini-split heat pump a week ago. The main parts arrived Wednesday, but the mount for the outdoor unit didn’t get here until Saturday – quite frustrating. In the end, to make a long story short, I now have a heat pump in the garage that seems to do a decent job of keeping it tolerable to comfortable in there. We’ll see how well it does when the garage door gets opened and closed multiple times a day, but so far so good. As one might expect with a garage in Nebraska in the summer, humidity seems to be the biggest challenge.

I also received my latest hardware order from Spruce on Saturday. I don’t know why I always seem to order something wrong (like AN970-4 fender washers instead of AN970-3) but it seems to be a particular talent of mine. Oh, well – The hardware store sells perfectly serviceable zinc-plated fender washers. I’ve just about got this wing ready to go to the hangar. This afternoon I glued up the one remaining loose bit from the last move, and got the hardware installed on the aileron coupling rod bracket.

AC & heat for the garage/shop

My latest hardware order from Spruce should arrive tomorrow, so I can finish the bracket attachment and have the wing ready to go to the hangar so I can get the other one brought home.

It’s been oppressively hot and humid for the past several days. It’s just a fact of life in Nebraska, as is bitter cold in winter that leaves the garage too cold for epoxy to cure. I’ve been threatening to do this for a while now, but finally my new mini-split heat pump should arrive tomorrow. Unfortunately some of the other items won’t be here until Thursday and Friday, so I may or may not be able to get it installed and working before Friday. If you’re contemplating doing this, the only thing I’d change (thus far) would be to order the mounting bracket for the outdoor unit and the line set cover from Amazon instead of Tosot. Silly me, I figured that stuff would all ship together, or at least from the same place. The mount for the condenser, which I pretty much HAVE TO have before installation, is coming from California and will arrive a full two days later than the rest of the stuff coming from Houston. Dammit. I’d be lying if I said I hadn’t thought about just ordering one from Amazon and using it instead, but the only ones they can deliver tomorrow are far less robust than the one I paid more for… so I guess I’ll just wait.

It’s a 12,000 BTU unit from Tosot. According to the manufacturer it has a SEER of 24.5 for cooling and HSPF or 13 for heating, which is incredible. It’s supposed to cool with outside ambient temps as high as 122 F, and heat with outside temps down to -22. Let’s just say that I’ll believe those numbers when I see the performance and electric bills to match. Still, even if it doesn’t hit all of those numbers it should be pretty good, and the manufacturer (Gree) seems to have a good reputation. It also has an ERV, or Energy Recovery Ventilator, which will ventilate the garage with outside air while saving some of the energy that would normally be required. I figure since the garage is where the occasional pipeful of tobacco gets smoked (and my darling wife’s horrific cigarettes) that should be a nice addition.

Aileron cleanup

The torque tube still had quite a bit of drag, due to it rubbing on the edges of the holes in the bay end panels. This morning I sanded the areas where the tube was contacting wood and re-installed the bearing blocks and aileron. Now the only control drag is from the bearing blocks themselves. The set I have installed are 3D printed mockups, and I don’t know how accurate the hole size is. Before I machine the final items from UHMW or whatever I end up using, I’ll have Stu mill me out one or two from some cheap scrap material like plywood or MDF just to check the fit on the tubing and see if I need to tweak the OpenSCAD file.

With that done, I used the Jorgensen bench plane to shave down the trailing edge to match the rest of the wing. I haven’t tried to change the taper yet, or reduce the thickness, I just basically whacked a quarter inch off the trailing edge of the aileron. I’ve used the planes a bit now, and every time I do I like them more. I like the little curled shavings, I like the feel of the blade precisely slicing off exactly as much as I set the plane for, I like the perfectly smooth edge it leaves. It’s so much nicer than using sanding blocks or power tools. I’m sure I don’t have the blades as sharp as they could be, but it’s still a joy to use them.

Having a QUIET shop vacuum and a dust separator is really nice as well. I want to put together some sort of cart or something to reduce the footprint – maybe put the dust separator on top of the vacuum. I’m still struggling with keeping the garage from getting cluttered and difficult to work in, but I can see a path to having a little more elbow room.

Fixing transit damage

As we were moving the wing, I managed to snag the root rib on the corner of the workbench at Stu’s shop while we were getting it positioned to load into my pickup. This popped a couple of glue joints loose, both of which pulled the wood apart rather than just the epoxy breaking, so that’s as it should be.

I also found an inch long crack in the leading edge plywood in the second rib bay, forward of the wing walk. I don’t know for certain if that happened during the move or at some time prior, when we were moving it off the bench. Doesn’t matter. Unfortunately it’s right on a curved part, and I was afraid I’d do more damage if I got too aggressive trying to pop the edges back together. I laid a layer of heavy fiberglass cloth on the inside of the leading edge. Once that was in place I buttered the outside with epoxy and micro balloons to make a filler, and taped plastic over it to keep it from sagging or dripping. I can sand it to the correct contour. I may add a second layer of glass underneath, I haven’t decided yet. What I did NOT do was remember that I had another place that needed a layer of micro (doh!) where I could have used the left-over I had. I didn’t realize this until the epoxy was well past the workable stage. Geez, I probably wasted two cents’ worth of material because of that!

It’s good to have the wing here; this all took less than half an hour but will take at least 8-12 hours to mostly cure. I can go back out this afternoon or evening and get more done.

Also, yesterday I picked up a Dust Deputy cyclonic dust separator for the shop. It was brand new in the box, and I got it for about 1/3 price. A welcome addition to the workshop for sure.

Workshop prep

As often (always?) happens when a new large work table appears in a garage, it immediately got covered with a raft of postponed and opportunistic projects. Vegetable and tobacco seedling trays, a couple of 2-stroke implements that needed new carburetors, some engine work for the Mustang, a furniture project, and a bunch of random other stuff that just… collected, as these things so often do. I also routed grooves and installed a couple of T-tracks in each of the extension wings, just because it’s not uncommon for me to need to clamp something down to the bench. Now I can.

Today I got everything cleared off and wiped on one more coat of linseed oil just to try and keep the top of the bench from getting crumbly and maybe provide a little bit of paint/oil/glue resistance. Assuming the weather doesn’t turn nasty early tomorrow, I’m hoping to bring one of the wings home. I need to get the aileron interference issue fixed, the last of the strut brackets installed, and the second (right) wing varnished so it can go to the airport where the wing stand awaits it. Then I can bring the left wing home, fix that aileron and brackets, and get it to the airport as well – and finally start on the top wings.

Minor epiphany

For a while I’ve been pondering how to set up the new wings on my bench. He’s got a pair of 10′ long steel rails, made from square tubing with slotted brackets to bolt them to his bench. He had put those together to support a router sled for flattening slabs of wood. Early on I figured out that we could attach them to the bench to properly orient the wing ribs for attaching the trailing edge and spars. The trailing edge stock needs to be glued on so that the taper exactly matches the angle of the aft end of the wing ribs, and the easiest way to do that is to have a flat surface that aligns the bottom of the TE stock witht he bottom cap of the ribs.

The plans call for attaching a 2×4 on edge to the edge of the work table with a shim under one side. This tilts the top edge of the 2×4 to the correct angle, which I measured at bout 14 degrees, to establish the right pitch to align the trailing edge and ribs. I was concerned about finding a perfectly straight, flat 10′ long 2×4, as well as shimming it consistently. All in all, I was nervous about how to set up the new wings on this bench.

A few days ago, I grabbed one of the ribs I have here along with a short cut-off piece of trailing edge stock. I started exploring different ways I could jig up a wing on the bench, and came to a surprising (and happy) discovery. With the TE stock flat on the front edge of the bench and the rib inserted into the notch, a standard 2×4 on the opposite side of the bench will perfectly support the rib right under the main spar location. So, I could clamp the trailing edge down on some release tape or waxed paper (to keep the epoxy from sticking to the bench), support the other end with a 2×4 – or multiple shorter pieces of 2×4 – and assemble the wing that way. Sweet! I’ll test that configuration when I bring the lower left wing home, which is built but not varnished yet. I’ll need to apply the varnish before taking it to the hangar for storage, and I can check to make sure my jigging idea will work as well as I think it will.

Aggravating delays

Well, it’s now been close to five months since I did any meaningful work on the actual – you know – airplane. I’ve built the new workbench, cleared out some space in my garage, and moved the new bench to said garage. I built and installed a wood storage rack. I fitted and leveled the bench extensions, which involved a little fine-tuning of the support braces. Along the way I had to remove the extensions and plane off an angle on the bench and extensions to clear the hinges that attach the extensions to the bench.

As will happen any time there is an available, clear horizontal surface, “stuff” accumulated. Tobacco jars, pipes, tools, a furniture restoration project, more tools… sigh. Then I decided to install some T-tracks for clamping and whatever else one would use T-tracks for, so I did that. Now I have a 10′ long bench with T-tracks on each end, with the extensions flattened and leveled relative to the main bench top. I have no illusions whatsoever about the bench being perfectly flat, but it’s close enough for my purposes. I’d say no more than 1/8″ variation anywhere along the 10′ by 3′ surface. I’m building a wooden biplane, not a supersonic jet or spacecraft.

All of this hasn’t been the sole cause of delays. For most of the winter it’s really been too cold out there to work with epoxy. Climate control has not been stellar. Our old small space heater died, so I bought a new, larger one – which holds the temperature at a level tolerable for humans, but not a temperature I’d trust for woodworking and epoxy. But, we’re close to being in the warmer part of the year. I’ll have a mini-split heat pump installed at some point, but that’s not a limiting factor right now.

Today I got 7-1/2′ of the bench cleared off and clean, tools put away, and various other “stuff” rearranged and cleaned up. I now have a clear path around 3 of 4 sides of the bench, with one end still a little cluttered. The drill press is repaired and back on its stand, and I got the runout down from its original .007 or so down to .003 or .004. Still not fantastic, but I think it’s mostly chuck. The spindle now shows about .001 after I removed and cleaned it with mineral spirits. I may need to tweak things just a little more.

Unfortunately, as much as I’d like to clear off the remaining extension and start the next wing, I need to build some storage for the bench or things will rapidly deteriorate. I want to put a rack for clamps on the front side, and some storage drawers or at least shelves. I want the spindle sander and small shop vac in the back, at a minimum. I need to build this stuff, and for that I need either a table saw, a trip to Stu’s to use his, or some other acceptable way to cut down plywood sheets. I’m thinking seriously about a new, relatively small circular saw and some way to hold a sheet off the table so I can clamp guide rails and cut the sheets up that way. I’m going to try to get to Home Depot tomorrow for some 1/2″ ply and circular saw. I have one, but it’s probably 60 years old and I’ve been fighting it to get straight cuts – I think there’s probably something better out there. Maybe even cordless.

Getting closer to resuming work

Between other projects and bitter cold weather, I haven’t gotten anything done on the plane for a while. With one project essentially finished and the workbench finally cleared of it, I took the opportunity to fit the entire bench top. It looks like I’ll need to shorten the supports on the left end to get the left side extension level… I’ll need the chop saw for that.

A different kind of plane

For obvious reasons, I want the top of the new work table to be dead flat. As I set the top pieces of particle board on the bench, it became obvious that there are (and I know this already) some high spots on the frame. Obviously the 2×4 dimensional lumber I used was not perfectly straight, so no shock there. The bench was constructed on top of a bench that is pretty much dead flat, but is covered with a layer of indoor/outdoor carpet – so there’s some room for high spots to compress the carpeting. Anyway – it needs to be flattened.

I suppose a person could attack this with a sander and some really coarse grit paper to knock material off where it needs to be. It would work, but it’s inefficient and in my humble opinion might lead to a “wobbly table” scenario, where you progressively over-correct making legs shorter to try to stop a table from wobbling until you end up with a Japanese tea table on 6″ legs. I opted to plane the wood. I didn’t own a plane, so I went and bought a couple. Lowe’s had two planes on sale for good prices, so I took a risk that they would be usable. They may not meet the demands of a professional producer of hardwood cabinets or something, but they’re certainly good enough to take consistent paper-thin shavings off of a pine 2×4. One is a 10″ bench plane, the other a 3-1/2″ block plane. I’m not taking the top off of the bench to start flattening it just yet; I still need to stain and attach the fancy quilted maple veneer to the gossip bench while I’ve got a working bench. Once that’s done, I’ll slide the particle board back off and get a flat surface to screw them down onto.

Getting the new bench ready

Since getting the bench pieces all home yesterday, I’ve been knocking out a couple of backed up tasks that needed done. Lisa needed a larger rectangular overlay for her ironing board – useful for ironing quilt tops and such. I cut out a 24″ x 56″ piece of half-inch plywood and, with he outline of the existing ironing board top traced onto the bottom side, attached some guide rails cut from 3/4 particleboard. I wish I’d used pine instead, of course.

With that done, I’m currently working to determine the best approach to staining the quilted maple veneer for the gossip bench. I tried the same red mahogany stain that I used of the rest of the piece — it really just obscures the beautiful grain patterns of the quilted maple. My next attempt will be with the same stain, applied after a wipe down with mineral spirits. A quick test on a scrap of particle board (which soaks up stain like the maple veneer does) looks pretty promising.

I’ve got the main top and one of the extension tops in place. I haven’t screwed the main top down, because the top frame is not flat. I’ll probably hit Lowe’s on Monday and pick up a hand plane to fix that. Now I’m wishing I’d grabbed Dad’s old planes when Mom was having the estate sale. At the time I didn’t see that I’d ever have any use for them… too soon old, too late smart, as Dad was fond of saying. I’m sure a new plane will require some work to turn into a really nice tool, but for right now I just need to knock some high spots off the edges of a few 2x4s. It’s not high precision work, but after all of the work and money I’ve put into this bench I’m not going to end up with a top that’s not flat. Once I get the central part flat and secured in place, I can work on getting the extensions properly aligned and get everything screwed down. I did screw one extension top in place, just so I could get the supports under it.

Along the way I’ve been thinking about how I was working over at Stu’s shop. I had the bench littered with tools and materials. I’d often spend several minutes looking for a pencil, knife, saw, or something else that was underneath or hidden behind a spar or something. Then I had a 24 x 40 inch rolling table covered with other stuff, and usually had a box of clamps sitting on top of the wing as I was building. I don’t have rolling tables here, nor do I have room for any. Time to work smarter. Rather than leaving the large shelf under the bench open to collect everything in a big jumble (it’s happening already), I want to figure out exactly what I use or will use for construction, and design some under-bench storage to make sure everything is close at hand, quickly and easily accessible, and can quickly and easily be put away.

I’ll likely want a drawer for the large number of spring clamps, though I wish there were a better solution for them. I want a carpenter’s square and a speed square hung onto the edge of the bench. I want one place for the epoxy syringes, mixing cups and stir sticks, and disposable brushes. I want both the coarse and fine razor saws close at hand, and marked so I know which is which just by glancing at the handles. I want masking tape and marking pencils within easy reach. The list goes on, but you get the picture. I figure if I do this right, I may be able to trim a month or so off the build time just by eliminating the cumulative time I spend trying to find that blasted tool I just had in my hand.

I’d write this all down or draw up a plan, but I seem to have mislaid the mechanical pencil I just bought. Sigh.