K40 Laser Cutter


#1

The K40 Laser Cutter is now in place at the space, though currently listed as out of use.

I’ve updated the Equipment wiki with a wealth of information on the project.
http://www.cheltenhamhackspace.org/wiki/K40_Laser_Cutter

We currently need a number of things doing, though the priority is:

  • RAMPS board to be powered up automatically when the laser is turned on. This is because without control, the laser defaults to “on” which could lead to fires.
  • PWM control isn’t working right. May need POT completely disconnecting and a firmware upgrade… hoping to do this next Monday 28th Nov 16
  • Case interlocks and safety button to be wired in.

I do not need to be present when the project is being worked on. I’ve volunteered a couple of people to help, but the world will not end if it gets broken. It’ll just be frustrating to those salivating in the aisles looking forward to using a working laser cutter.

Please read the wiki page and all of the links off it to get a really good idea what is going on before trying to “help” :slight_smile:


#2

laser firmware has been fixed! Andy is going to go for an upload next thurs. I’ll be down w/c 3rd to have another play.


#3

Laser currently incorrectly firing at all times so don’t turn it on unless you know what you’re doing. Should be a tweak we can fix tonight.

Stepper dimensions off. (x/y seem to be the wrong way round)

z-bed unresponsive in software. May be software or if more intelligent than expected, my terrible wiring.

Forgot the spades to wire in the emergency stop again.

Hopefully after a decent session tonight I’ll be ready to do some laser training next week.


#4

Good news everybody! It’s cutting fine now, though we’re still trying to work out why it only achieves a cut of about 2.5mm on wood. It’s either a settings or a dirty lens so will have a look next Monday (9th)

The raster issue (currently ghosting only in the X axis may be a laser alignment issue (ie it’s not hitting the middle of the mirror) or alternatively I may have put the lens in the wrong way up (this is unlikely).

Hope to cut a new control panel to flip the amp meter the right way up and remove the manual PWM control which is redundant now.