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You might try reseating the motor connectors. If the rotational sensor is not reading correctly, you'll get that symptom.

Bottom line: you need Halotron AND a dry powder extinguisher.

As a fellow laser fire user:

1) That fire extinguisher powder is super fine and super corrosive. You have to super clean...

My experience with a GCC Explorer II laser is that the vector cutting arc motion (curves) is really slow, because the controller doesn't know how to do a curve. It performs a series of little lines,...

GCC recommends against acetone for mirrors (but yes for lenses). The issue might be that the mirrors are affixed to their bases with superglue, which softens in acetone.

So I guess the message...

Without looking at schematics, it is difficult to figure out what happened. Obviously, there's been a catastrophic short, and it is slightly possible that he vaporized cap was the problem. However,...

I'll second that. Caused about $2k of damage to my laser when a plastic grid went up, and I was lucky to catch it.

Also, it is really important to have a halon and a dry powder extinguisher....

Rodne, for something like that I would be inclined to fire up the laser without the covers (extreme caution required, the RF will cook your eyeballs if the laser does not get you) and monitor the...

Good point, Al. I did inspect my caps and was pleased (and maybe a bit surprised, because of the hot environment) to find no bulging whatsoever.

For those not familiar with the issue, over time...

Never been there, but I do drive past the plant occasionally. It is right close to Solyndra, famous solar bankruptcy company. And a bit further down the road is Tesla, living in the old GM-Toyota...

It is a lead free assembly. Just the coil itself, and the big pads on the PCB, were a challenge. It took a lot of heat to do this soldering, on top of the lead free. I have a higher-end Metcal and...

There were a few other dodgy looking joints, so I refreshed those as well (after sucking out the old solder).The laser is now working much, much better. It is clear now that it has been deteriorating...

I asked them, they said that they have never seen such a failure and said that I might still have problems, because there could be some other problem causing the laser to overheat. Once I finish the...

Hot day, heavy laser work going on (1/4" acrylic which is hefty for a 30W laser).

Rapid beeps - "laser thermal error". Machine does not want to cut, so I recycled it.

Laser now cuts at half...

Joe, that sounds awful expensive. Why not use Delvies? They charge $16 for one piece of black acrylic 12x24, and they have reaks for quantities or whole sheets. Our local plastics distributor can be...

We had a laser fire, and I used a dry powder extinguisher. It was the right thing to do, as the thing was flaming.

But the residual powder is a disaster. It is extremely fine, and got all through...

The concern with acetone is that it can attack the adhesives used to bond optical parts. Some lenses (not IR laser lenses) are two lenses bonded together, and acetone would be bad there. Other...

My explorer is also smooth at slower speeds. Given that the driver is breaking every arc into line segments, the quality-fine-coarse-speedy settings aren't going to do much for me. Looks like some of...

Ah - yes, the edges look flame polished but also faceted.

I used the Spirit driver to make my circle. The Spirit driver will output true circles if you set the engraving resolution to 1000 dpi (I...

Bottom line: which laser machines have the smarts to draw a circle as a single smooth line?


So I've been having trouble getting nice edges on my PETG cuts, which is always a bit of a tricky...

Fumes from both cast and acrylic are quite smelly. The good news is that they dissipate fast. The cut edges also smell, so bagging or boxing them can help.

If your neighbors smell it, they won't...

Yes - that stuff was most of the burn. Unfortunately, I get too much flashback on metal. Usually, the air flow keeps everything under control but the vents falling off was a big problem.

It is actually a 160x80 graphics display. I found a similar part on line, but I have replaced my entire control panel - problem solved. I need to get this machine cutting by tomorrow night!

The...

OK, I am well on the path to recovery. The new control panel fixed my communication issues, I have a new lid, table and belts, and am now cleaning out all residuals of the fire powder. Tomorrow's...

We've got to the point where our PETG has a clear, smooth edge. But sometimes, we'll get rough edges and we end up tweaking for a day. Bigger lasers with more air get a matte edge. The problem occurs...

I've done an "air cut" with it, so the motion systems are all working. Not sure about the laser, but I think it will be OK.

The chemical fire extinguisher left a powdery mess, but it cleans up...