This is a list of useful sites for laser cutting and engraving:
Looking to make slotted laser-cut templates from scratch? Here is the program for you! http://flatfab.com/
Here is a fun site to get some ideas. 52 projects has turned into 130 and counting! “52 Lasers is a collaboration between Pixelaser and Isette, showcasing one new project per month created with an industrial laser engraving & cutting platform. The blog was born out of a need for an artistic challenge and a huge list of things we want to try, but never seem to get around to doing” http://52lasers.com/
How about some free DXF files? https://www.scan2cad.com/free-downloads/dxf/
Need a template for packaging and paper craft? https://www.templatemaker.nl/
Dial gauge for the K40 analogue potentiometer. https://www.thingiverse.com/thing:2949736
Unbelievable site for plans! Get ready to have your mind blown! http://3axis.co/
www.everythinglasers.com This is a volunteer site and is not monetised so there are not any advertising ect. Just a place for people to interact with a passion for lasers.
You can never have too many tutorials on how to align the laser. Here is another take and explanation! http://atklaser.co.uk/2017/10/06/laser-beam-alignment/
Need another vector art program? http://www.artcam.com/free/#design
Great source for clip art. http://clipart-library.com/
5 great common sense tips for laser engraving/cutting http://www.jumbieindustries.com/blog/5-tips-for-laser-cutting-acrylic-lucite-perspex-plexiglas-etc
Cool and Unique Laser Cut Lamp http://www.instructables.com/id/DIY-Heng-Lamp/
Birdhouse, Great beginner project http://www.thingiverse.com/thing:916051
Lots Of Cool Stuff to Make! Just look at this bowl! https://www.zenziwerken.de/Uebersicht
Some Great Ideas to Reverse Engineer! https://ugearsmodels.com/