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Big Red

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Our largest and most powerful laser cutter. It's good for large pieces of material, thick material and for cutting quickly. It's suitable for use on wood and acrylic like the other laser cutters. It's not as good at engraving as middle red and little red is better at fine detail work.

LC1290 Laser Cutting / Engraving Reference

The LC1290 lasercutter is equipped with a SPT SPT-TR130 CO2 laser tube. To ensure tube longevity and reliability the tube should not be operated above 26mA as indicated by the current meter on the machine. Manual “test” laser fires are currently configured to 10mA, ~40% of the configured Max-Power.
(Previously: 2018–2020 100W CO2 laser tube)
(Previously: 2017?–2018 Reci 130W W6 CO2 laser tube, max 26mA)

It can cut thicker materials than the LG500 (due to a slightly longer focal lens) and at higher speeds (due to the higher laser power). However, it cannot operate the laser tube at low enough power levels to perform very fine engraving.

Please note that these parameters may not be completely accurate, as they assume that the laser is perfectly calibrated and aligned. In the case that the laser is not perfectly aligned (which is most of the time), power levels will need to be adjusted upwards and/or feed rates lowered accordingly.

Big Red's cut and engrave speeds are limited to 200mm/s to reduce shaking the mirrors or delicate components out of alignment.


Material Thickness Feedrate Power Preview Result/notes
Ply 3mm 40mm/s 100% Warps just by looking at it. May benefit from *careful* weighting down… *avoid path of laser head!!*
6mm 20mm/s 100%
9mm 10mm/s 100%
12mm 6mm/s 100%
Exterior/Marine Ply 4mm 17-20mm/s 100%
6mm 5mm/s 100%
MDF 3mm 35 mm/s 100%
6mm 20mm/s 100%
9mm 7mm/s 100%
12mm 5mm/s 100%
Acrylic 3mm 25mm/s 100%
10mm 7mm/s 100%
LaserMax 1.6mm 200mm/s 50% (still really powerful!)
Corflute 5mm ~40mm/s 100%
Hard Range EVA Tile (Black) 12mm 40mm/s 100% (50% corners) The ones that fit together like a jigsaw. Note that the speed is based on having the hard side at the bottom. Speed can be increased if the hard surface is facing up and faster again if there is no hard side (eg yoga mats)
Pine 19mm 6mm/s 100%
12mm 7mm/s 100%
Corkboard 6mm - - Will not cut completely without severe charring despite very aggressive parameters. Don't bother. Not yet an approved material.
PETG (Polyethylene terephthalate) 0.5mm 120mm 40% (Corner 35%)
Material Scan Gap Feedrate Power Preview Result
MDF 0.075mm 200mm/s 35%
MDF (wide) 0.05mm 350mm/s 25% Weird resonance and skipping over a wide (450mm) area using above settings. This worked better.
MDF (line) na 100 mm/s 25% For line work, as opposed to raster engraving. Make sure corner power is set to the same level.
Coir Doormat (unused) 0.5mm 350mm/s 35% Grey scale images do not work.
Material Thickness Feedrate Power Preview Result
MDF 3mm 200mm/s 25%

Please do not edit this bit! These are the standard settings for the machine.

X Axis Pulse Unit 0.0048000000
Y Axis Pulse Unit 0.0048000000

To install the rotary axis for doing round things you need to first disconnect the Y axis and connect the rotary axis FIXME

  • tools/lasercutters/bigred.1618058246.txt.gz
  • Last modified: 2021/04/10 20:37
  • by blakesamuels