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Your picture looks similar to my NM135, but the electronics box has all it's connectors on the side, not on the back as shown in the picture.

I think Torus has z-stepper at the top? NM-135 has...

Hi Tas99... did you ever figure out how to access the Y-coupling and whatnot?

My Y-stepper has problems: 1) the output side of the flexible coupling is missing both screws (yet somehow, it doesn't slip. mostly), and, 2) one of the jam nuts has become un-jammed, resulting...

Is it a good idea to lubricate the sliding bed of a belt sander? If so, what kind of lubricant?

Treadmills require lubricant. Seems that belt sanders might need similar, for the same reason.

So... you've tried just about every permutation of cpu (lpc17xx / STM32 / esp32 / mega / DUE) and firmware (grbl / smoothie).

Huh.

I'm particularly intrigued by your ESP32 grbl port (that is...

Much thanks to the above two dudes. I ended up taking their advice, dropped in my 8bit mega2560, installed grbl, and 5 hours later, my laser is running.

So to partially summarize: as of...

I have a new 40W laser cutter build, which uses an Arduino DUE and ramps1.4 breakoutboard.

I have bludgeoned Marlin to work, but it has a couple of deal-breakers:

- Marlin does not ramp the...

The y-stepper is connected to the flexible coupling. The flexible coupling is connected to the lead screw. Next on the leadscrew are two locking nuts (jam nuts), which provide preload against the...

The goal is a tube: with round cross-section at one end, and square at the other. (see picture).

The tube follows a given squiggly line. I tried bobcad's Surfaces->Sweep, but it only allows...

Jim Dawson = Dude of The Week. Thanks man! I did exactly what you suggested: Behold the picture:

5-gal bucket, half-filled with water (and cup of bleach to prevent stink).
Black hose...

Ok, it hasn't yet.... but I can't be the first guy to hook up a woodworking dust collector to the laser. The same dust collector is used for an active wood shop - tablesaw, bandsaw, belt sander,...

Many moons ago I had the same issue with my NM135- head doesn't go low enough. I found, on all 3 axis to some degree, that the travels were "artificially" limited, and I extended the travels by:...

I use Moshidraw with the Moshiboard - which I've bludgeoned into using HPGL direct from my CAD suite (ie. the laser vectors, it doesn't raster).

Moshidraw allows you to set the cutting speed: ...

Yeah... I *think* I had the same problem. My solution was to put a single dot on the bottom right corner of all drawings.

I *always* put the dot in the same location for all drawings (for me, I...

Anyone know where to get Kool Mist #77 for a reasonable price in Canada?

Americans can get it from Enco for $28/gal.
Previously I got it from Travers Canada for $40/gal... but they've sinced up...

I hear you. A few years ago I bought the head Novakon sells, which I like, but I was using it just yesterday, and thinking "I don't remember the torque setting being so finicky". It is especially...

OP, what did you end up getting?

I saw the exact same video earlier, and wanted the same stone too.

I think flatness in the stone is desirable; these guys state a surface tolerance of .003" on...

Ray, why are bellows better than telescopes?

I have both on my machine (on different axis), and I have zero faith that the rubber wiper/seals on the telescope edges remain sealed at all times. ...

Did you find a resistor? My original resistor has also started throwing off sparks, and I'm having trouble finding a replacement with a 20kV voltage rating.

Can you describe the bushings? Seems to me the key to success here is getting good sliding on the bushings despite having offset forces

Lee, can you tell us what you did to fix the runout?

On my NM135 changing the pulley sizes is a near-trivial task - bought a couple of pulleys and belts from Precision Mechanical Components Timing Belts Pulleys Spur Gears Couplings Bearings Sprockets...

I went through the CNC tapping craze about a year or two ago. I attached a stepper to turn the spindle using a toothed belt; the stepper is the "A"-axis (4th axis). Insert tap into the spindle,...

Never mind, I found my problem: the threaded aluminum doodad which holds the final focusing lens was loose, with the lens moving about.

snarkhunter, did you get this resolved?

After a couple of months of inactivity, my laser similarly seems to be wandering about.

I had arcing problems too. I finally figured out one of the INNER glass tubes was broken, and the cooling water had flooded inside where it's not supposed to be, and the energized water was arcing...

I had my NM135 (375lbs) moved to the 2nd floor up stairs. I had a guy who specializes in moving vending machines do it. He had a dolly (the kind used for moving refrigerators and whatnot), except...

What kind of runout are you getting? I tightened up my preload and was able to get around .0007" or so (still not great), but the heat was a little uncomfortable, so I mounted a computer fan...

Where do you source your HDPE?

100ipm is a good clip. Do you use an air blast for chip removal?

Once you try a quickchange, you will not want to go back to the wrenches. 10 seconds for a toolchange, with perfect height. No thinking required.
And it'll allow me to one day add an ATC (it would...