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Hi,

Is it possible to wire 2-phase stepper ( Leadshine 57HS09, that has 4 wires) to be driven with 3-phase driver (3 wires)? This is for rotary for existing laser machine that already has 3-phase...

http://www.cnczone.com/forums/attachment.php?attachmentid=286286&stc=1
Update, I successfully added beam combiner. No noticeable power loss!
Wrote a guide on my blog: LensDigital - How to add beam...

Yeah that doesn't look right. As far as I heard, there's no such setting in RDWorks. But it's in the firmware.
Also check out this facebook page, I found it invaluable! They actually have proper...

Check your original design, it has smooth edges.
Also I had issue with wobbly pin table which cause some uneven cuts. Fixing pins with caulk fixed it...

I've heard that too, but couldn't find any actual numbers. Sure it will reduce power, but by how much? Could be 1% could be 5% who knows... That little pointer fitted with machine just drives me...

Actually I thought my first mirror is aligned pretty good. I always hit "bullseye" on second mirror at any Y position. But will double check again tonight just in case :)
About beam combiner, yeah,...

Thanks I didn't know that! Re-checked alignment, it was off. But for some reason I can't center it in all 4 corners :( I think rails/extrusions actually not leveled. For example I align beam on...

Well, I got it working again. Now Pulse button works even at 10%. Anyway I noticed that recently my red laser pointer started to get super hot, like it was shorting or something. For some reason I...

Thanks! Thats intersting. But it worked just day before, I was able to pulse at 10%. It also works when I cut from the program, just not when I press button manually...
Still interesting...

I have sh-g350 50w laser machine. It was working fine but today when I press pulse button it will not fire at all, unless I set max power to 20% or above! It cuts and engraves even at 10% power...

My laser machine came with standard off axis red laser pointer, which is pretty much useless. I really want to add true beam combiner where both red laser and CO2 laser beams go thru lens.
I know...

One that doesn't smell is cast (attaching picture). No idea about the other one, I think I got it at Home Depot long time ago.

Just wanted to drop a note about something i found interesting. I got some white 1/8" acrylic and tried cutting it few days ago. There was NO SMELL, and almost very little visible smoke either. Even...

Oh you are talking about squareness in XY axis, right? Should be easy to check that, thanks for the hint.
I was working about laser head not being perfectly perpendicular to the cutting surface. On...

I had no idea. But I think you are correct. My cutouts are skewed :(

Thunderlaser, thank you so much for this info! It helped me solve my X axis drift.

Thanks! Fortunately mine was simpler to fix. I just found this thread and it explains how to fix calibration issues! It totally worked too! I cut 200x100 square, measured and it was actually...

I'm using eBay 50W machine (SH-g350) w/ RDWorks v8. When cutting some PCB stencils I noticed a disturbing drift in X axis. The further laser hed travels in X axis, the more pads shift to the right. ...

Thanks! Are mylar/acetate sheets have any PETG? I got fold Si mirrors and have been using them for few weeks... Mostly acrylic wood, but I do need to cut mylar for pcb stencils... I also tried...

Thanks, I'll try that. I have no idea what kind of lens I have, but I suspect it 1.5". I never measured focal distance directly from the lens...
Different subject, does anyone know how much water...

Yes I'm pretty sure. I found it draws thinnest line at 19mm from the end of the nozzle (lens is actually higher). To cut I lower nozzle by 1/2 of material thickness. I made a "jig" tool from acrylic...

I'll have to check what settings I used with my 2.4mm arcylic...
I actually tried increasing speed, but power requirements jumps drastically. At 8 mm/s I had to use 60%, and at 15 mm/s it went...

I posted a DIY on my site, how to make pin bed. It was super easy btw, and cost me about $60.
Now I'm trying to figure out settings for different materials. If everyone can share theirs it would be...

I'm in no way an expert on CO2 tubes but for some reason it seems to me more and more that there are no 50W CO2 tubes outhere... There are 40Wats and then 60Watts. While I can find very few 50W tubes...

Thanks for posting picture btw! :)
I added some "Gorilla" duct tape to the top rim of the outer cage filter and it helped a lot! There's a very little smell now coming from the filter, it's...

That's great filter! I think I'm going to build something like this. I have a bunch of questions if you done mind :)
So you have your motor on the bottom, it takes air from the front intake, and...

Took some wind measurements. When filter not attached to laser cutter I get 1074 ft/min or 336 CFM (if my calculations correct). With everything attached to laser cutter I get about 210 CFM inside....

Nice! You got same fan as I! :) Not sure I want/can drill thru solid foundation of concrete tho :)
Good idea with fans btw. Question, are you using epoxy to hold those pins?

I'm going to take reading on air flow with my anemometer tonight and post results.As for carbon, I think it actually took more than needed. I ordered 55 lb and used 3/4 of it (probably at least 30...

I build this "instructables" extractor. It uses 392 CFM centrifugal fan. I discovered it leaks somewhere near top of the filter, but can't figure out why. Added some more sealing, fan is sealed...