Today I corrected the mistake I made yesterday in my shop! And, took pictures of the last 2 days work! And, changed the blade on my chainsaw so I could go saw firewood before the big freeze gets this far south. And, conducted numerous wood working science experiments with assorted woodly worker type chemicals!
FEI (
For Everyone's Information!) - Silmar 41 does not set up without catalyst! (
Colin is still settin up there in the snowbank laughin at me I'm sure. But he was certain enough in his reply to my message questioning that, that I believe he mighta done it before too!) And, for the record, it's kind of a pain in the ass to pour Silmar resin out of a 5 pocket mold through 1/8" honeycomb. (
Yeah, go ahead and laugh Lou!!) But after adding catalyst and putting it back in the pressure pot, it did set up, although there was a pretty good layer of gooey stuff around all the edges when I pulled them out of the mold. But, that seems to be curing now that it's removed from the mold.
So backing up a day or two... Turned birdhouses the other day. Using KISS method... (
Keep It Simple Stupid! Or, in this case, Keep It Stupid Simple!) Oak Dowel purchased at Lowes, and plain old walnut. Bored center of dowel 1/2" in the drill press, turned ends of walnut to fit bore, and glued. No Lee, I did not thread the roof, if the bird can't figure out how to get in the little bitty hole, he can go apply for government housing. Turned house, and finished, drilled 1/4" hole for bird to crawl in, drilled 1/8" hole for perch, glued 1/8" dowel in for perch, glued bird to perch.
Was going to do a polyurethane finish on these, but one of my pieces of walnut had an unseen check in it that caused a little concern, so I stabilized with CA while turning, and rather than risk that showing through the poly decided to just do a CA finish and be done with it. There was 4, sister-in-law got one for Christmas, and hauled it off before I got pictures!
No the fit isn't really that bad on the bottom and the base, cleaning the base up I ran the tip of my skew up under the edge. It's all filled with CA, can barely see it with the eye. It's that "camera adds 25 lbs." thing going on; it looks like a big gap, but it's really not.
Tried casting some blanks with Alumalite the other night also... That one didn't work well either! Think I might have caused that problem though. Pressure pot has a slow leak, running to 90 - 95 psi, and it slowly bleeds off to about 70, then very slowly bleeds down to about 50 and holds. I was adding air trying to keep the pressure up on it while the resin set. In hindsight, slowly losing pressure is probably a good thing, higher pressure pushes air out of the outside of the wood fairly quick, as the pressure slowly drops it should reduce the amount of air being removed from the blank, so it doesn't cause this problem. Leaving it alone would likely be a good thing. SO... more experiments with leaving it alone to come.
Blanks pictured here had been stabilized, soaked for a couple weeks in fact, didn't soak up much resin however, and when cooked out, seemed to spit most of what they had soaked up out. Blank on the other side of the mold, hadn't been stabilized, I got lots of little bitty bubbles out of it.
Cool blanks regardless, just have a lot of bubbles where there were any rough edges, which is an interesting effect in itself, so I turned them anyhow. We'll keep them for the house, but yes there were issues. Bottom one I got a hair off center when I drilled my hole, trying to turn flat side off, it got a hair overturned but I wasn't wasting it. Top one, down there in the third picture, my resin broke away at the bottom, and I had to build it back up with CA. Got a lot glue between the mandrel and the bottom of the stopper and had to sand it back, hence the ill fit to the stopper.
Is anyone else experiencing problems with the PSI stopper threads? I keep running into problems with stoppers not wanting to screw into the inserts? Thought it was the inserts, but I can run a bolt in those with very minimal resistance, however when I try and run a nut down on the threads on the stoppers, it's tight to REALLY tight. Contemplating getting out my dies and chasing threads on them from here on out honestly.
Otherwise my day started Tuesday, welding up stakes for the brother-in-law's coon traps. While I had the welder goodies out, I pulled the muffler off the mule and patched it where the brackets had pushed through the bottom. e.g. Remove, patch, reinstall, mark for location of brackets, remove again, weld brackets up, reinstall. Was plenty dirty time I was done, so I went ahead and serviced it, new filters all around, oil change, made a few other minor repairs. Cleaned another corner in the shop up. Loaded a batch of shorts for stabilizing, turned top stopper, and then screwed up my Silmar.