Suitable star caps for a 2W laser

[nzoomed]

I've built a laser with an M140 diode, and want to install a star cap in place of the G2 lens.

Is there any set of star caps available that can screw into the housing?

Am keen to experiment with making a bat signal type arrangement too. Anyone done this?

How easy is it to make a star cap with your own design?

 

[Jim H]

The caps are actually holograms, so not very easy to make. Unless you mean just to physically block an expanded beam. Then a 3D printer would be your friend, although plastic would probably melt quickly at 2 watts

 

[Encap]

5 Star Caps w/ 5 Patterns Grating for Laser Pointer Torch-Style eBay $10 free shipping
https://www.ebay.com/itm/5-Star-Caps-w-5-Patterns-Grating-for-Laser-Pointer-Laser-Torch-Style/113925563330?_trkparms=ispr=1&hash=item1a867e23c2:g:RaIAAOSwPWtcIZuc&enc=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&checksum=113925563330c02c6b01bb21428d9426ff3275389d6d

 

[nzoomed]

5 Star Caps w/ 5 Patterns Grating for Laser Pointer Torch-Style eBay $10 free shipping
https://www.ebay.com/itm/5-Star-Caps-w-5-Patterns-Grating-for-Laser-Pointer-Laser-Torch-Style/113925563330?_trkparms=ispr=1&hash=item1a867e23c2:g:RaIAAOSwPWtcIZuc&enc=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&checksum=113925563330c02c6b01bb21428d9426ff3275389d6d

Do they have the same thread as a G2 lens would have?
They are cheap enough, I may as well grab some.
Would these likely be plastic or glass? If they will melt, its pointless using them i guess.