Laser/Parameters

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Verified parameters for the 100W BRM lasercutter:
Probably outdated, as the tube was replaced on 2024-02-02. Verify before cutting! And mark it in the table as verified

Material	Cut Speed (mm/s)	Cut Power	Engrave Speed (mm/s)	Engrave Power	Comments
Black granite	n/a	n/a	300	50%
Linen cloth	300	70%	n/a	n/a
Leather 3mm	15mms	65%	n/a	n/a	Innenseite des Leders nutzen, Glatt auflegen.
Finnboard/Finnpappe 0,9mm	77	100%	?	?	2024 maxvalue
Finnboard/Finnpappe 4mm	25	98%	?	?
Buchbinderpappe 0,5mm	110	98%	?	?	2023 maxvalue
Plywood birch 3mm	10-35	95%	250	30	Does cut properly with 35mm/s but in some places <10mm/s are required.
Ikea PP Dosen	x	x	200	30	10mm Fokusabstand
Polyesterstoff	150	70%	?	?	Fokus ist schwierig...
Spacecraft Multi Layer Insulation	100	80%	?	?	Can occasionally melt together again after cutting
Cork 5mm (Kork-Matte)	20m	100-100%	?	?
Plywood for "engraving" vector lines	150	7.5-37.5%	n/a	n/a	See below
Gravur: Eloxiertes Aluminium	-	-	120	80%	Fokus: 7mm

Attraktor hat den gleichen Lasercutter, deren Wiki hat viele Parametervorschlaege.

Notes on engraving vector lines

When using the "cut" mode to scratch thin lines into a surface (say, outlines of fields in a board game, when the full board is cut through), the laser is moved at high speeds (say, 150mm/s) with low power, but slows down when lines are bent too tightly. This is where the minimum cut power shines: The cutter will reduce power as it speeds down, to avoid burning through the material. If you set the lower bound too low, lines will get lost where it slows down (because the effect on the material is not linear, and 1% may not do anything at all any more). If you set it too high, the prolonged exposure on a single spot can send the laser all through the material.

For test cuts, take a coarse and a fine sample from your picture.

A practical test file is slowdowntest, which has multiple colors to try out different settings, and lines of varying curvature to see the effects.