Fixmat

Just simple reference point holders for laser engravers. Most of lasers have fance on table that is very low, in most cases only 2 or 3mm. With those fixmat holders it is possible to fix materials in place even if they have rounded edges or they have soft pads on bottom. They come in 4 heights and 4 different designs.  Two of them have 45° angle that can also be used for round shape.  Magnets are used to secure their position on metal beds. I used round 10x2mm magnets, for this project I used 72 magnets. Cheap source for them is aliexpress or temu 

(arround 10€ per 100 magnets). Also they are available at Maker's supply (B-CA016). If you need extra strong magnets, than best source is supermagnete.de (https://www.supermagnete.de/eng/disc-magnets-neodymium/disc-magnet-10mm-2mm_S-10-02-N)

It is recomended to print parts out of PETG, since it can handle a little bit more temperature and it is not toxic and flammable like ABS. Just any color of filament. but maybe for easier recognition I recomend to print different hights with different filaments or different shapes in different colors like I did.