Equipment/HPC LS3060 Laser Cutter/LogBook

Logbook

George cut some 2mm acrylic to make an enclosure for a robot.
I created an XKCD plaque in copper using a two step (laser then chemical) process. These techniques will ultimatley be used to prototype PCBs. TBH, at this point the UV method is looking about as straightforward...
We etched Aden's HTC G1 with pedobear, using Cut power 20, corner power 10 and speed 100.
A Cthulu keyring was made on 2mm acrylic towards the end of the day. We did notice a few problems with this, namely at one point a hole came out non-circular, but also the etched layer didn't align correctly with the cut layer, out by about 2mm. No explanation for these at this point.
I tried making a PCB, but should have used single sided copper.

Cut some 1.5mm neoprene fairly successfully - needs high power and it's a bit smelly. (Settings in the book.)
Circle issue is fixed. It was a problem with the tension on the frontmost X drive belt.
Did some awesome etching onto black anodised aluminium - 450mm/sec, 90% power.
We also built an acrylic box designed in qcad.
Cut some hackspace keyrings, but noticed that the acrylic, when warm, warped upwards. Pause function worked as expected letting us tape down, but some ventilation sucking from below the bed would help a lot.

Todo: Test CorelDraw X3 with 20mm circles on paper and compare to test using LaserCutter Software