3d printed lens caps

**Tin Can** · 24-Apr-2015, 16:43

You guys did see the lens cap I adapted for Jena APO 900 mm... Big, cheap, common.

**Jim Jones** · 24-Apr-2015, 20:11

I prefer screw-in lens caps. They provide better protection to both glass and filter threads. The glass in many junk box filters can be replaced by metal, plywood, Masonite, or MDC discs to make effective screw-in lens caps.

**Jim Graves** · 24-Apr-2015, 20:13

Here's a link to Thingiverse .... it's a site loaded with 3-D printer files for all things imanginible ... this particular link is the result you get when you search for "lens cap" ..... there are even some files marked "large format lens cap" ...... it's a whole new world out there: LINK

**c.d.ewen** · 24-Apr-2015, 20:16

Originally Posted by Drew Wiley

but the wife needs a new car, so guess the lathe will have to wait.

The first thing I ever made with the lathe was a knurled replacement knob for her telescope. Saved a lot of discussion on its usefulness.

Charley

**Tin Can** · 24-Apr-2015, 20:21

Originally Posted by c.d.ewen

The first thing I ever made with the lathe was a knurled replacement knob for her telescope. Saved a lot of discussion on its usefulness.

Charley

+1

**HMG** · 24-Apr-2015, 20:21

I keep a box off plastic tops; unfortunately can't always find a fit.

**Jody_S** · 24-Apr-2015, 20:23

Originally Posted by c.d.ewen

The first thing I ever made with the lathe was a knurled replacement knob for her telescope. Saved a lot of discussion on its usefulness.

Charley

Brilliant! I really wish my wife needed something I could make with mine.

**HMG** · 24-Apr-2015, 20:27

Originally Posted by Jim Jones

I prefer screw-in lens caps. They provide better protection to both glass and filter threads. The glass in many junk box filters can be replaced by metal, plywood, Masonite, or MDC discs to make effective screw-in lens caps.

If I could easily find screw-in caps - or any commercial cap - for the sizes I need I'd do that. If I wanted to spend $25-50 per cap from SK Grimes I'd do that.

**HMG** · 24-Apr-2015, 22:03

Originally Posted by Jim Graves

Here's a link to Thingiverse .... it's a site loaded with 3-D printer files for all things imanginible ... this particular link is the result you get when you search for "lens cap" ..... there are even some files marked "large format lens cap" ...... it's a whole new world out there: LINK

Quite a few there along the lines I'm thinking of.

**Jim Andrada** · 29-Apr-2015, 13:21

Delrin/Acetal are quite flammable. My clients like to use them because of ease of machining and stability, but our major OEM customer won't allow it because of flame and smoke issues.