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Newbie - Cheap build and basic questions

Discussion in 'Laser Cutters' started by Benjamin Vg, Dec 30, 2019.

  1. Benjamin Vg

    Benjamin Vg Well-Known

    Jan 13, 2016
    Likes Received:

    I have a Workbee 1500x1500 and I would like to convert use it for laser printing to print mdf 8mm toys.
    I see some cheap laser modules like this one: €31.09 38% de réduction|20W 450nm lumière bleue tête Laser pour maître série bricolage sculpture gravure Machine graveur accessoire outils de bricolage laser module tête-in Pièces machines à bois from Outils on AliExpress
    Is it correct? If not, what could I take as a cheap module to start? What should I pay attention? Power, focus, technology, ...?
    Due to the size of my machine and my workshop I will not be able to create a full case around my machine.
    I could create a shield in front of the machine and of course wearing glasses. Is it reasonable enough or is it too dangerous?
    I also see that some of you use an air vacuum pump to avoid fire, again I will not be able to do it is it reasonable in terms of security?
    What else should I consider to buy for this upgrade? I see that some of you use a heat absorption plate and some advice to just use terracotta tile should I have some?
    sorry about all those newbie question If you have some guides it could be valuable too :)


    #1 Benjamin Vg, Dec 30, 2019
    Last edited: Dec 30, 2019
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Mar 1, 2017
    Likes Received:
    8mm MDF will need at least a 40w laser, even then, it will be very slow, a 80w would be better

    Since its MDF, why not mill it? Diode lasers are good for engraving, but cutting, is more of a gimmick, the seller may have a sped up video showing it cutting 3mm acrylic in 10 passes at 200mm/min but practically, no one wants to sit through that :)
    For cutting, you really do have to go for a CO2 laser

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