Beam Combiner for K40 Laser

This is a **Beam Combiner Mount** for the **K40 chinese 40W CO2 laser**. No drilling is needed, just some glue or double sided tape. **Bill of Materials:** - Mini 5V Red Dot Laser 650nm (6x10mm), ~2 EUR: http://www.ebay.de/itm/171925923594 - Beam Combiner Optic 20x2mm, ~50 EUR: http://www.ebay.de/itm/151644437138 - 4 springs, I took mine from this set: https://www.amazon.de/gp/product/B009T1OTBM - M3 hex screws, nuts, washer - M2 allen screws, nuts, washer - Some glue and/or double sided tape **How to make one:** - Print the ring (that's a bit difficult, but it works with support) - Put two M3 hex screws in the ring - Glue/tape the ring in the K40 laser hole - Check where the CO2 beam leaves the hole (using some paper) - Print the rest of the files (you probably need support for the main component) - Put the combiner optic in the main thingy and use 2 M2 screws with big washers to keep it in place - Put 4 M2 nuts in the main thingy - Glue/tape the plate on t