Inconsistent cut results

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pierre dradin
Posts: 24
Joined: Sun Oct 30, 2016 7:50 am
Location: Baillonville, Belgium

Re: Inconsistent cut results

Postby pierre dradin » Sat Jan 07, 2017 7:48 am

It is possible that a mirror is defective, and that the power of the tube does not give everything, change the mirrors or test with a powermeter between each mirror
LT1290, 1200*900 100w Beijing EFR laser tube,
before leetron 6585 and lasercut 6.1 and now Ruida 6442 DSP RDWorks v8.01.18
cnc home made 750*560 350kg, Galaad, kress 1050
Pierre dradin

Chris Berry
Posts: 13
Joined: Mon Jan 02, 2017 11:58 am
Location: Crete, Greece

Re: Inconsistent cut results

Postby Chris Berry » Sat Jan 07, 2017 10:55 am

Just putting the results in the same place

Original cut
10% power = 1mm depth
15% power = 4mm depth
20% power = 5.5mm depth
25% power = 6mm depth
30% power = 6mm depth
35% power = 6mm depth
40% power = 6.5mm depth
45% power = 6.5mm depth

focused 3mm closer:
10% - <1mm
15% - 2.5mm
20% - 3mm
25% - 4mm
30% - 4mm
35% - 4.5mm
40% - 4.5mm
45% - 4.5 mm

This test was informative - although not the results expected.
Focused 3mm closer and achieving at least a 3mm cut, with increases in power we should have been able to hit at least 6.5mm - the fact that we didn't means that increases in power are not resulting in increases in output. A reduction in cut depth focused closer is very curious indeed - it can only be explained by being focused closer to begin with. Just to make sure, run a focus test on a sloped plane - it may just be possible that we started too close.
Now for the bad news. With the ramping down at 35% Either the electrical system isn't keeping up or the tube is shot. Seeing as you're seeing increased current draw, the latter is much more likely.

Weike 130 x 90 100W RECI Laser TR
Windows 7, RDWORKS V8.01.10

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