![]() ![]() Ībove is the stock Full Spectrum control board. The FSL 4th Gen is not a K40, but it’s similar in some ways, and I’d found others that seemed to have done the upgrade in the Google+ Cohesion3D Group. The Cohesion3D Mini board can function as a drop-in replacement for those cheap Chinese K40 laser cutters. It also meant that if I did it right I could ditch Windows and actually use a Mac (or Linux PC) to do my laser cutting. So besides me not wanting to use software that was possibly going to cost me $300, and Windows freaking out and ruining etching jobs, I thought replacing the controller and using other software seemed like a good idea. I was also informed that Full Spectrum requires new owners to “re-license” the software at $300 before they’ll accept any support requests. I first had to get the Windows PC on a network, and that meant I had to add a USB WiFi dongle, and I’m really not a fan of having old Windows 7 PCs connected to the Internet, but RetinaEngrave requires it. I should mention that the previous owner(s) didn’t seem to have any issues, but then, we all know how I get along with Windows. I mean, it would work sometimes, but there were too many failures. Plenty of people run these laser cutters with the stock control board and use RetinaEngrave software running on Windows. Oh, I should probably explain why I wanted to replace the controller. Looking to upgrade? Get that board instead.) ![]() (If you are reading this in 2020 (or later) the C3D Mini has been replaced by the improved C3D LaserBoard. If I get time I’ll try to shoot a few new photos or do some illustrations. ![]() Some of the photos are terrible (sorry about that!) but hopefully I can explain things in text. I’ll do my best to walk through the process with this post. I replaced the existing Full Spectrum controller with a Cohesion3D Mini controller. I just completed the “upgrade” of a Full Spectrum 4th Generation Series 40w Hobby Laser.
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