The Shop > Wood & Stuff
Banjo Build
S. Heslop:
Ground down a (supposedly) 20mm spade bit to cut a tight hole for the bushing.
Over-did it a little and it took alot of pressure to press the things in.
Didn't check the drill press table before drilling the hole and it was a fair ways off of square, so it was alot of shimming to get this thing to slide. It's still fairly tight and could probably do with a bit more work. But if I remember right, it was never really that smooth a slide to begin with. It'll probably wear itself in eventually.
Pressing the second one in using a very long cheating bar ended up shearing the vise's screw off towards the end. Just means the vise has a smaller travel now, but I'm almost glad this happened. I never expected this vise to last very long, being a cheap one at reduced price from LIDLs. But 3 years of very heavy abuse (whacking it with a hammer n all) it's held up pretty well.
It'll give a lead-in if I do make that video segment about taking care of tools. If it was some swish expensive record vise i'd be compelled to take care of it, and probably not get as much use from it.
Anyways I drilled the second hole a ways out so it's going to require some fairly heavy shimming. I'm taking a break for now though.
I think all of this is proving that I was just very lucky the first time I built this.
S. Heslop:
Had surprisingly no problems getting that second thing on.
Little cousins came over and hung out in the workshop and helped out while I reenforced the wood around that pin that was coming loose and then reassembled the thing. That again was a hassle. The connection between the yoke and the windscreen wiper motor was slipping so I tried shimming it up to tighten the joint. Worked for a bit then came undone (which won't be too big a hassle to fix). But just before it came undone I noticed that the spindle was tilting back and forth as the motor went up and down; a problem that wasn't happening before.
It seems very sturdy trying to shift it about by hand but maybe the torque of the motor was enough to slide the new lower motor mounts back and forth. If that's the case then i'll probably put some plywood blocks on the front and backs of them to reenforce them in their position. Although at that point the design won't be so elegant and will look a mess. The other option might be to make some largeish washers to go under the heads of the screw that hold it on, so I can really tighten them down to try get it to grip. But that'll then probably compress the shims more and require more fiddling and adjusting.
It's a shame because I really thought I had it. I guess the good news is that the spindle is running very true and doesn't seem to be precessing or vibrating at all. I was worried adding that pin across it would throw the balance out.
S. Heslop:
Used some thicker and longer screws on the motor mounts and fussed with shims to get them really cranked down, since the smaller ones were stripping the wood. It slides alot smoother now than before too.
t=8m24s In this bit of the video you can see the windscreen wiper motor moving back and forth. I never got around to fixing that since it didn't seem to be causing any trouble but i'd noticed that the bushings in the crank arm are surprisingly worn and this probably didn't help.
Welded a brace on. 2mm steel with 3.2mm rods with a cheap buzz box. Unfortunately someone borrowed my better welding mask, took it to work, then got laid off so i'm using the rubbish hand visor that came with the welder.
I'm doing it outside since there's still piles of sawdust about to catch fire.
Not the prettiest welds but they're plenty strong enough.
To try get the motor to grip the yoke better I turned a thing. One part of making stuff that I find funny is trying to come up with names for all the parts. Got no idea what i'd call this though. An insert? A flange?
Whatever it's called, I cant mount it in yet since I've ran out of epoxy on a bank holiday Monday. So i've reached a dead end for today.
Continuing with the topic of abusing tools, I turned down this bedford socket so it could reach inside the part i'd made.
bertie_bassett:
I'm doing it outside since there's still piles of sawdust about to catch fire
where's your sense of adventure??
looks like your making progress, im sure you'll get there in the end
S. Heslop:
--- Quote from: bertie_bassett on April 06, 2015, 02:12:50 PM ---I'm doing it outside since there's still piles of sawdust about to catch fire
where's your sense of adventure??
looks like your making progress, im sure you'll get there in the end
--- End quote ---
The adventure in this case would be going down into the garage every half our to make sure no sparks snuck into a pile and left it smouldering for a while before it fully caught light. I have managed to set oily rags on fire before while welding though!
Thanks for the encouragement. I'm really wishing I just left the thing misaligned though so I could move on with the project. Turning the pot round was supposed to be the easy part!
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