Lasercutting mdf

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This topic contains 13 replies, has 4 voices, and was last updated by Profile photo of Martin DB Martin DB 2 weeks, 4 days ago.

Viewing 14 posts - 1 through 14 (of 14 total)
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  • #28853
    Profile photo of Jack
    Jack
    Participant

    Hi,

    Is there somebody with experience on lasercutting MDF with the JTech 2.8 or 3.8 laser module. Which thickness can be cut?

    Thanks for your answer,
    Jack

    #28925

    I’m no expert but I think 3W is too weak to cut wood. It can engrave or mark, but Idon’t think it could cut at reasonable speeds.

    Usually you need at least 40W CO2 lasers to do that.

    #29029
    Profile photo of Jack
    Jack
    Participant

    Thanks Dui,
    Nobody is using a higher power (Chinese) non-CO2 laser to cut mdf?
    Ok, then I have to adjust my expectations 🙂

    #29032
    Profile photo of Martin DB
    Martin DB
    Participant

    Like led? I think the powerful (affordable) is around 10/15W pulsed, not continue… mine is 5.5W…. but not tested with cutting, just engraving.

    I will try a high pressure air assist for cutting thin wood, acrylic, etc.

    #29067
    Profile photo of Jack
    Jack
    Participant

    Hi Martin, that would be great.
    Some Chinese lasermanufacturers are offering a 5.5W and claiming it could cut mdf. I want to be sure…

    Jack

    #29181
    Profile photo of Jakob Andersen
    Jakob Andersen
    Participant

    I can cut 5mm MDF with my 6 watt laser, but it takes a lot of passes.

    #29184
    Profile photo of Martin DB
    Martin DB
    Participant

    Jakob can you share more details?
    Do you use air assist?
    Do you move Z axis to keep focus as you go down in the mdf?
    Feed rate?

    #29186
    Profile photo of Jakob Andersen
    Jakob Andersen
    Participant

    Yes, I use air assist (compressed air) and also move the z axis(not the full 5mm about half)
    I don’t remember the feed rate, but not very fast. (I just turn the knob on the display until it looks right :D)
    Must move without any shaking.

    I have the mdf elevated a bit so I can see under it while cutting, if I cant see the laser all the way around I just restart it (its set to return to start position on finish and keep steppers active).

    I haven’t done it for a while though, seems just to slow.
    Much easier to just mill it.

    I really want to try cutting black or red/orange acrylic, but its really expensive here 🙁

    Edit: I think my feed rate for mdf where similar to the ones for plywood i used here: https://www.vicious1.com/forum/topic/5w-laser/

    #29187
    Profile photo of Martin DB
    Martin DB
    Participant

    Thanks! It sounds interesting.

    #29207
    Profile photo of Jack
    Jack
    Participant

    Thanks for all information. It is promising… The Optlaser 6 W costs 500 euro, so I have to save some time. But it’s from Poland so no import taxes this time 🙂

    #29241
    Profile photo of Martin DB
    Martin DB
    Participant

    A quick test with yellow acrylic (2,4mm)… To cut in one pass I have to go veeeery slow, 10mm/min…. but it works! (5.5W laser).

    • This reply was modified 2 weeks, 4 days ago by Profile photo of Martin DB Martin DB.
    #29253
    Profile photo of Jack
    Jack
    Participant

    Thanks Martin, so there are some possibilities in lasercutting without CO2. What laser (brand) do you use?

    #29254

    Well, if it really costs 500 euros for a diode laser, I really suggest you check on the Co2 lasers. You can probably get a good one from China for a similar cost. They are more difficult to install since you’ll need mirrors and water cooling, but at least you’ll end up with something much more powerful.

    #29255
    Profile photo of Martin DB
    Martin DB
    Participant
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