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Unread 25-08-2014, 15:03
Trent B Trent B is offline
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Re: Finding the thred size of a 3/4in. bore Bimba piston

Quote:
Originally Posted by Raymundo N View Post
I also feel like i need more information in order to actually draw the thread into the mounting in Solidworks. Does anyone have any ideas on how to do this?
Solidworks should have a threaded hole feature built in, where you can select the thread type (if it is actually .61 it may be a 5/8" bolt at .625)

You just need to measure the major diameter (largest diameter you can get (so include threads) and the threads per inch. Then you should be able to use the threaded hole tool. Tell it it is a 5/8 - 24 bolt (or whatever it actually is) and how deep you want the hole to go, and it will draw the threads visually.

To actually get the three-dimensional model of the threads so it can print on a 3d printer you will have to go through a complicated process of drawing the profile and revolving it in a helical manner at 1/24" per revolution.

It may be easier to print the hole to the appropriate tap size In which case you would create a hole of that size in solidworks, so it is printed, then tap the threads into it. I suspect your printer may have difficulty providing enough resolution to make clean, strong threads.
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