simple baseball

[cherokeechief79]

does anyone have a simple baseball?ive seen intricate ones on grabcad and other sites but I need something simpler.i want to turn the sphere on the lathe and then put it in a rotary on a 3 axis vert mill and trace the seam and stiches with a small ball mill.ive tried modeling this in mastercam but I have not been very successful.

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[cherokeechief79]

I worked with the one from grabcad. it came out good in the end.

[br1]

Very Nice!

[victorofga]

another day i made one..
i was curious if i can lay out the exact stiches in draftsight..

heres the result.. not a solidmodel, but i think you can import into mastercam.. either way using the obj format or converting to stl

3d obj baseball

[cherokeechief79]

thanks. I used the wireframe just like the one in the last pic that you posted.i deleted everything except the stitching edge curves.then I scaled it slightly larger than the sphere I made in the lathe and projected the laces"normal" to the sphere surface.then it was just contour with a .031 ballmill using axis substitution for the rotary.

[victorofga]

yes its not a difficult something.. only the start made some headache, to figuring how stiches are have inclination...
the stichline itself is 4 half circle... a real great practice to drawing in 3d...

isnt funny that draftsight advertised for 2d only?

quite like the idea to engraving only the stiches into surface.. a lot simler than 3 milling the surface