- March 4, 2017 at 2:26 am #28853
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,
JackMarch 5, 2017 at 5:43 pm #28925
Dui, ni shuo de duiParticipant
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.March 7, 2017 at 3:58 am #29029
Nobody is using a higher power (Chinese) non-CO2 laser to cut mdf?
Ok, then I have to adjust my expectations 🙂March 7, 2017 at 5:27 am #29032
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.March 8, 2017 at 12:13 am #29067
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…
JackMarch 10, 2017 at 10:38 am #29181
I can cut 5mm MDF with my 6 watt laser, but it takes a lot of passes.March 10, 2017 at 10:53 am #29184
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?March 10, 2017 at 11:38 am #29186
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.v1engineering.com/forum/topic/5w-laser/March 10, 2017 at 11:41 am #29187
Thanks! It sounds interesting.March 11, 2017 at 5:22 am #29207
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 🙂March 11, 2017 at 5:59 pm #29241
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).
Attachments:March 12, 2017 at 12:20 am #29253
Thanks Martin, so there are some possibilities in lasercutting without CO2. What laser (brand) do you use?March 12, 2017 at 1:30 am #29254
Dui, ni shuo de duiParticipant
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.March 12, 2017 at 4:57 am #29255
My laser is a chinese generic one…. this one:
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