Gallery, Projects and General > The Design Shop
3D Printed Quorn Tool & Cutter Grinder
Joules:
http://www.technologyreview.com/news/540926/3-d-printing-breaks-the-glass-barrier/
Perhaps I can add some ABS to bring the glass temperature down :scratch:
DMIOM:
--- Quote from: Joules on December 24, 2015, 09:40:05 AM ---......
The completed assembly. I'm very pleased with how this worked out and can see me making more of these for things like microscope stages and other machine adjusters. I guess each one can be printed as a set of parts in just over an hour.
--- End quote ---
Cracking work and the filled & cleaned markings look splendid
Dave
Joules:
My thoughts are going back to bellows for the bars, having taken note of comments. What if I centre drill and cross drill the bar ends beyond the castings, so the air has a path to equalise, then run silicon tube from a take off on each support casting to a filter box, or out of dusts way ? How does that sound ?
I might even be able to print the bellows in Ninjaflex.
Well, as it turns out plenty of info on making paper bellows, it might be worth printing a couple of press tools that emboss the paper for folding the bellows. Having the tools means I can remake bellows as and when.
PekkaNF:
--- Quote from: Joules on December 26, 2015, 11:10:59 AM ---My thoughts are going back to bellows for the bars, having taken note of comments. What if I centre drill and cross drill the bar ends beyond the castings, so the air has a path to equalise, then run silicon tube from a take off on each support casting to a filter box, or out of dusts way ? How does that sound ?
--- End quote ---
Pressurizing a bellow inside is the most efficient way. Equalizing pressure trough filter will cause underpressure.
You could design the system with differential "piston rods" - the air would ideally move just inside the bellow...there will some real life limitations.
Or pressurize just a little - just ennough flow to compensate volume. Best to put orifice on feed, then bellows and plenum + sintered filter on exhaust, just to keep it under minimum pressure.
Pekka
Joules:
Thanks Norman I have not put a cotter pin on the lever arm as that is clamping PLA to PLA. I expect the other areas to be cotter pins.
Todays printed part, I modified the boss, reducing its diameter so the part would print flat, it also will take a threaded insert.
I am wondering why the workhead centre is offset from the bar centre ? As I really need to clamp the workhead support on both sides to counter any bending force, what impact will it have on the grind geometry having both centres inline ?
Thanks Pekka, might look at using a small computer fan to provide above ambient pressure, will look into that.
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