In fusion I'd make the bearing racers by first making the solid donut parts then placing a slightly uoversize disk inside the metal and using it as a cutter to subtract out a space to fit the balls. I think most 3D CAD has the concept of volume addition and subtraction,so just subtract the bearing cavity and you cut top and bottom races at the same time.
You might look into Fusion. Modeling this is a 10 minute job and the company has loads of on-line training that covers this. If you get desperate about getting plastic to stick to glass. Get some window glass and frost it with #1000 grit. Then the problem is getting the part off. On Tue, Mar 30, 2021 at 2:05 PM Gene Heskett <[email protected]> wrote: > On Tuesday 30 March 2021 13:04:30 Chris Albertson wrote: > > > But I've done a cross section that will, it rotated enough times to make > the races, come very close to making printable races. which I think my > nearly $2000 printer can do once I gedt the PIE sheet and a better > liquid glue that McMaster3d sells. This must be a different glass in > this Dremel, occasionally you can make the rub on glue stick work but > even then its 3 or 6 times start to get past the 2nd layer before it > comes loose and I wind up with an ounce of filament welded to the bottom > of the head. > > But the rotation eludes me. I can // the for(ang=[0:1:360]) out and get a > perfect cross section of the two races faceing each other, offset to the > radius, wihe ball groove centered between them, but the instant I > uncomment the for statement and add the terminating } by uncommenting it > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
