3d Printed watch crystall press
This is a press to fit acrylic crystall on watch cases. A whatchmaker crystall press can cost over $200, so this is a cheap and working solution for hobby enthusiast. You will need a knob with a M10 rod of 12cm, I used one from a monitor stand, that has a thread for a M4 screw on the opposite end of the knob where it fits a ball bearing of 13mm outside diameter, 6mm inside diameter and 5mm thick, a M4 x 8mm long screw and a M10 nut. If you do not have or can't get that threaded knob, you can use a M10 rod, but you will need to drill and tap a M4 thread on one side and file the rod to 6mm to fit the bearing. Then you can use another nut and print a pastic knob for the other end. There is no need for support material, the press body should be printed on one side, for strength. You can add a magnet to the ram and a piece of metal to the crystall dies so it does not fall. All parts should be tight fit, some sort of filing or sanding may be required. I had to sand the M10 nut that goes on the front so it fits really tight. There are two holes on the press body to use screws and fix it to a piece of wood as base. All the parts are printed with 100% infill, except for the press body that I used 40%, so can print it solid if you want. Also, all the parts are printed at 0.01 mm layer. You will also need some sort of cussion for the bases so the crystall can rest.I used an eraser. See the video for how to use it.
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