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The Mach3 plugin is really the only "software only" controller out there right now. The plugin works best with a really high resolution. I have found that it only does a decent job with at least...

There are a couple good threads on this same subject over at buildlog.net.

buildlog.net • View topic - New Design Ideas - Looking for Feedback

"If you didn't build it, you will never own...

I did some UHMW machining in the past and had great luck. I ordered a new sheet and I can't get any decent results. The material does not cut off cleanly and leaves connected strings all over the...

Hi,

I am the guy behind the MakerSlide. I am a member of of CNC zone for over 5 years.

The slide material is designed for lighter machines. The system is designed to be able to double up...

$25 for nozzle and fitting + $15 shipping. Please contact me directly...

bdring at buildlog.net

Yes, but shipping is $15

International shipping would be $13.95 for as many as you want. If the nozzle hits something I think that would be bad.

The set screws could be changed to thumb screws and the nozzle could be...

Shipping is $4.00 for one and $4.50 for more than one.

I have a lens assembly that looks like the one below. I made an assist air nozzle for it. I got a lot of requests for them, so I had a bunch made.

If anybody wants one, I will sell them until...

The beam is only about 5mm in diameter when it exits the tube and has a very low divergence of a couple milli-Radians. The beam is only going to be a millimeter or two larger after going to the...

1K is about right...Check out buildlog.net.

http://www.buildlog.net/cnc_laser/index.php

I remember seeing that image over at Phlatprinter. Check out the gallery and ask them.

http://www.phlatboyz.com/pictures/

I also thought the Google Sketchup Slicer program could help.
...

There is an open source CO2 laser cutter here...

www.buildlog.net

All parts are off the shelf, pulleys, belts, bearing, etc except a few custom precision parts which can all be laser cut. ...

I want to make some solder solder paste stencils on my 40W CO2 laser. It appears that the preferred material is Mylar (polyester). What is the recommended power level and speed? What is the...

The normal CO2 lasers sold all over the palce will not "shine" through normal clear materials like glass, plexi and polycarbonate. That is why you can etch them...and why CO2 lenses are so...

I got some info on that build a while back. He said the stuff you see on that page was a very, very low feed rate and just a proof of concept. He is now working on a real one.
...

For reference, here are what the TEM modes typically look like. This came from a wikipedia article.

FYI: My Chinese 40W tube has a perfect TEM00 spot.

In some applications a beam expander before the lens is used to optimize spot size and focal length.

There is a good write-up on the subject here.
http://www.parallax-tech.com/faq.htm

also ...

I was so worried about my last shipment that I completely documented every step of the unboxing. That way, if a stupid packing mistake was made, I would have good evidence.
...

I have had two tubes arrive broken (from a different vendor). I was able to get my money back. The way to pursue this is to insist that the packaging was defective from the tube vendor.

It...

A guy over on this thread just rebuilt a ULS laser and talked about exhaust blowers.

http://www.buildlog.net/forum/viewtopic.php?f=16&t=124&p=597#p597

He made a good point about locating the...

I don't think you can buy the kit anymore, but the plans are still available.

http://www.hobbycnc.hu/CNC/Laser/55_Watt_Gas_CO2_Laser_Tube.pdf

I would love to build one of these. I have my own...

Checkout the build logs and forum on www.buildlog.net. There are several people doing what you are asking about.

I am building a machine and have posted my drawings...

I have been "blogging" the experience here...

http://www.buildlog.net/cnc_laser/index.html

PS: There is a laser specific forum on...

I have been building a laser too. I have it fully functional for cutting and basic engraving.

PWM straight out of Mach3 on the parallel port is acceptable for rough speed adjustment which is...

First of all it sounds like a dangerous situation. Be very careful in all your experiments, especially when "floating" power supplies outside the chassis.

I agree with "the man" in looking for a...

Both do a fine job of G-Code control for cutting

I don't think EMC2 can do a raster type engrave from a picture. Mach3 has a plugin, but it is unsupported and I have only had very limited success...

Has any one used it? I am trying to figure out what pin/setting is used to control the beam. I think it is one of the "Output #_" pins, but I don't know which one.

...any help would be...

I got my lens installed on my home built and it is working fine, but I have a few general knowledge questions.

Is there a top and bottom? Some of the sketches I saw on the Internet suggest both...

I finally got a good tube. If anyone is curious how these things are shipped, I documented the un-boxing (un-tubing..actually) on my build log.


http://www.buildlog.net/cnc_laser/unboxing.html