My No9 Parky has just had a quick once over with an electric wire brush so I could see what I had under the gack that was on top (it came out of a farm barn/workshop). It needs a strip-down etc. but it's QR mechanism and tightening all seem fine (As far as I can tell without having it bolted-down).I took the advice of various members of this site and had ago myself. Considering the vice was half buried on an allotment for a couple of years to my knowledge, it was quite easy to do once the screw was free. I used a wire brush on my old drill to clean it up, all the screws except one came out and were reused. It feels quite smooth when tightening and the qr is precise. The handle is a bit bent but l,ll keep it like that, l don,t think l,ll ever use it so it won,t matter.
After all that can l now call myself an engineer?
First vice l,ve owned in 77 years.
Invert, strip the half nut out and cleanA 3 1/2" Woden, started using it as a kid so early 1970s at a guess. Gathering dust at home so I took it with me when I moved out:
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And a 4" Record, inherited from my father-in-law. This one is in a lot better condition, or was before I got it and kept it in a damp shed. Will get treated to some ACF50 before this winter.
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The Woden could do with a fettle, it makes a horrible chattering noise when the jaw is moved. Any tips?
I'm with you. How do you make castings / moulds from 3D prints in steel.Interesting. If precision tolerances can be sorted, I wonder if the parts might be used as a basis for investment casting ?
I have friends who were pattern makers and they had a special rule for measuring timber when making patterns; metals don't all contract in the same rate. It wasn't unknown to make a pattern using the wrong rule, and mistakes not realised until a casting had been made.Yes but they'll all shrink so...
Actually, there are only 5 "critical" parts, but progressive multiples of them. 2, 2, 4, 8 and 16 pieces.It looks so simple but having struggled myself just to model this thing, the clearances for a good fit are horrendously complex.
And there's a LOT of parts....
Interesting. If precision tolerances can be sorted, I wonder if the parts might be used as a basis for investment casting ?
It's possible to investment cast bog standard PLA see the VegOilGuy on the YouTubes ...Good thinking - and investment casting can get very close (see high pressure section turbine blades in jet engines - main surfaces not machined) but that's not cheap.
A normal foundry won't do investment. A precision foundry will, but pricy. An art foundry will, but prob not the high precision needed.
And then your 3D printing material can't be any old plastic - must be a fully melt-out-able wax type -- no good if crud left in the mould on burn-out.
And then I'd say it still won't be precision enough for this type --- redesign the vice?
Ah well - maybe some other project?