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Golf ball

by ssd, published

Golf ball by ssd Feb 2, 2011

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Description

Variations on a golf ball...

My first attempt didn't survive meeting the club, this one is sturdier. The hollow one survived one hit with a putter, but not the driver. The version with internal heavy support survived at least one hit with the driver. (But, being white, it was lost. Next one I make will be fluorescent red.)

The -sh version is hollow, but with external supports.
The -ss version has heavy internal support and thin external supports.
The -out version is the outside only, drawn in blender.
The scad version hollows the outside from blender and adds the support pieces.

I challenge someone to figure out how to do the blender part in openscad! (Wtih parametric depth or something...)

Recent Comments

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great idea!

The ABS handled the impact fine. It's the deformation without internal support that was a problem. With internal support, it seems to survive.

if possible print with nylon, might make it handle impact a little better

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License

GNU - GPL
Golf ball by ssd is licensed under the GNU - GPL license.

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Instructions

Pick either golf-sh (~35 min) or golf-ss (~1 hr), or edit the scad file and make your own stl. The scad file can also make a smooth ball without the blender file.

Wall thicknesses can be edited, or you can comment out (*) the support.

I can't decide if I made the dimples deep enough. I might play with alternate versions.

---
Here's an attempt at blender 2.4 drawing instructions. (I don't know if 2.5 interface changes affect this without testing it.) These are not the exact numbers I used to draw the included object unfortunately. This might look long, but once you get it, it takes about 3-10 minutes.

* Add mesh -> Iconsphere
* subdivision 3 or 4 (I used 3), radius to match the scad file (21)
* edit mesh (tab)
* special (w) -> bevel, adjust so at least 3/4 of the face is a polygon (about 1.6 maybe)
* deselect all (a), then switch to face mode (triangle in bottom bar)
* use select multiple (shift RMB) to select a few of the large faces (pentagons, hexagons)
* use select similar (shift G, then either perimeter or area) to select more of the faces
* repeat last two steps until all polygonal (hexagons, pentagons) faces are selected (deselect any accidentally selected triangles or other edges); rotate around to make sure none are misseed (alt LMB drag)
* Extrude (e) region -> scale center (s c), adjust to push faces in (maybe 0.95?), click to set
* select all faces (aa)
* subdivide smooth (w 4)
* continue smoothing (w smooth) once or twice
* subdivide smooth once more
* smooth repeatedly until it looks better or the verticies are not moving much (hitting tab to view results and go back helps)
* Save! Also, export as stl so that OpenSCAD can import it to add supports and carve out the center.

I don't claim to be a blender expert. If you can do this better (or add details I missed), feedback is appreciated.

Comments

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rmm on Apr 17, 2014 said:

great idea!

Creative_Hacker on Aug 5, 2013 said:

if possible print with nylon, might make it handle impact a little better

ssd on Aug 5, 2013 said:

The ABS handled the impact fine. It's the deformation without internal support that was a problem. With internal support, it seems to survive.

ZNahum on Feb 4, 2011 said:

Does this have the same amount of dimples as a normal golf ball?

ssd on Feb 4, 2011 said:

There is no standard number of dimples or standard pattern of dimples on a golf ball. Every manufacturer does it a bit different.

This ball is not standard weight for a golf ball, however.

relet on Feb 3, 2011 said:

Now that would be interesting to see if it is possible to make a few more layers, like for a real golf ball. Leave a hole and fill the ball with rubber, or pause the bot and insert a smaller core. Something like this.

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