3D Printed Screw Threads
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More screw threads. The nuts and bolts are threaded 8mm.
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Dave , your mechanical bits never cease to amaze and delight me.
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Thank you sir.
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More screw threads. These are 23mm long.
They are for a model of a U-joint from around 1900.
The center ball and short pieces of the shafts have been printed. Yokes are printing now. Looks like I managed to get the screws dirty fitting them into the holes in the ball. I haven't decided it I'll print the tapered pins or make them a different way.
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@tuna1957 said:
Dave , your mechanical bits never cease to amaze and delight me.
I agree with tuna57 completely.
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Thank you.
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Finished except for the tapered pins.
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Nice
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klasse!
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Hey this is awesome, just a quick question. What do you typically use for tolerances between the nut and bolt? I know it depends on the printer but just wanted to get a baseline idea.
Robert
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Thanks.
@rspierenburg said:
What do you typically use for tolerances between the nut and bolt?
I nrmally model the internal and external threads to the specifications given for the thread type and class. In some cases if I'm feeling lazy, I just scale up the internal threads by 1.02 or 1.03 in X and Y without scaling Z. I've found I can't be lazy with Acme and square threads, though. Scaling doesn't work for them. They have to be modeled correctly.
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M6 x 1.0 screws. I didn't have any short enough metal ones on hand and it was faster to print a couple than go to buy some for this proof of concept thing.
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I'd find it hard to resist the urge to hit that with a heat gun to smooth it out.
Crazy accurate modelling. Does it hold a seal?
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I would like to do something to smooth it out but it's fine as it is. The threads have a fit typical of metal ones but it won't whistle. I think because the PLA doesn't resonate like bronze, brass, or iron would.
I expect I could run steam through it. Once.
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