…an update to the laser cutter / mill saga

by Stephen Hobley on August 30, 2011

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It turns out that the laser tube I have will not work with the generic PSU units on E-bay. Not entirely sure why this is, but I did notice that the insulation on the tube is starting to *melt* so maybe it’s time to move on.

So… it looks like my only option right now is to bite the bullet and go for a full 80W system. This requires a chiller to run the water coolant. The significant increase in the heat generated will soon warm up the water reservoir, and so active cooling is required. Which in turn is going to push the costs up to around $1400. 🙁

So I’m going to have to do some creative accounting to get that one through the books 🙂

In the meantime I’m going to look into adding a rotational axis to the mill.

More to come…

Update : So I just ordered the new tube, power supply and chiller unit. Should ship today from China and get here in a week or two…

Update2 : Also the motor and controller for the fourth axis is on its way. I’ve got most of the parts cut too, so it’s only a matter of time now… 🙂

Yay! The tube is in…


{ 1 comment… read it below or add one }

Pudrik July 7, 2012 at 8:36 pm

If youve been experiencing melting of the insulation its probably due to wrong type of insulator tape. vulcanising tape as they normaly use have different breakdown voltages. Even if the tape itself insulates 25kv / mm this doesnt help when it causes breakdown at 20kv look carefully in the datasheet when buying.

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