Gallery, Projects and General > The Design Shop
3D Printed Quorn Tool & Cutter Grinder
RotarySMP:
That rendering looks cool. Which CAD SW are you using?
Mark
Joules:
Hot on the printer...
It doesn't photo well under artificial light, I have just started the clean up of this part so it looks worse than it actually is.
But I hope this gives some sense of scale.
Mark the software is Rhino, and it's using the artistic view.
raynerd:
Great work. Can't wait to see it up and running - I'll stick my first parts order in :wave: :thumbup:
PekkaNF:
Grit on TCG....
My experience shows two approaches:
* Nothing covered. Keep dry and vacuum everything out before moving anything :lol:
* All covered/pressurized. Still needs to be vacuumed before shutting down pressure.
Rubber covers + non pressurized or any grease/coolant on ways: Worse than anything else.
Think of rubber cover over a bar. You move the cover and increase/decrease internal volume of the bellow = differential air pressure and that surely sucks the grit inside the area that was supposed to be protected. And it is hard to clean the area inside the bellow.
I was thinking of fitting plastic "scrapers" on ways and pressurizing a small plenum right behind of it. Needs some trial and error, plastic "washer" pops out if too tight fit to rod and if too loose, uses a lot of air and blows the dust/grit around.
I would not worry bout the grit on MK I model, just keep it dry and clean.
BTW. Grit is going to be embedded on the plastic and wear out the steel rods. May actually make nice laps.
Pekka
Joules:
LOL bars are going to be perspex, so running it dry. The initial thoughts here are 3D print different vacuum shields for the various grinding operations as printing is relatively quick I should be able to make custom hoods to enclose the work and wheel as much as possible and attach vacuum cleaner to reduce dust/grit MAYBE...
Having just checked the parts this morning, they have changed shape a little !!! My close fit isn't quite as close now, this could be temperature/humidity related, we shall see. Sorry guys not expecting metal casting precision here, but perhaps good/enough for sharpening small items and cutters upto 6mm. The challenge is getting something that works, it would be nice to see what this casting would be like printed in polycarbonate, but that is beyond the capability of my 3D printers. Now when we have desktop metal printing :med:
Here you go Rob, if the rest of the project turns to crap this micrometer thimble will be worth the experimentation. I have just applied Humbrol enamel with a toothpick, once it dries I can lightly rub down the surface and sharpen up the detail. Little things like this make the printer soooooo useful.
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