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Its really hard to follow a story over 5 posts, but in the UK (and other countries) if money is mistakenly paid to the wrong company electronically, the responsibility lies with the bank or the...

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Technobots - Electronic & Mechanical Components

I would recommend using emc rather than mach3

mach3 has a (small) delay built into its m3 m5 commands so doesnt fire the laser at the right time. The only way to do it is with work arounds.
...

ps I used the TB6560 3 axis controller in the end because it was cheap (£30) and easy to repair if it broke. I bought two new high torque motors as well to go with it which are a lot smoother at high...

hi

with the reprap, grbl is ok because the nozzle head is flattening out the layers slightly as it lays them down, and also the head is moving a lot slower than a laser head so the changes in...

hi
grbl isnt going to work for laser cutting as the speed is impossible to get smooth enough. Even with perfect settings there are quite perceptible accelerations and decelerations between points so...

I might be interested in some honeycomb from you. I have honeycomb at the moment but am not sure if its aluminium or not, It might be steel...but anyway, when I cut paper I get a lot of little back...

Just a heads up...
I just downloaded and installed opencam and as soon as I clicked on the desktop shortcut it broke my ubuntu installation. I couldnt open any folders or open nautilus in...

Photoshop wont work. It has to be a vector drawing programme that outputs dxf files like coreldraw or inkscape etc
And it has to be distilled water (from a chemist in the uk usually) otherwise the...

Hi
Yes I think you have to specify the p tolerance otherwise g64 on its own reverts to best speed rather than tightest accuracy in corners.
The p value will still allow for best speed but will...

Yep the picaxe is a useful chip for quick solutions and prototypes. It uses a small bootloader on an ordinary pic allowing programes to be written in basic and downloaded through a simple serial...

ok thanks, Ill give it a go with 3 fans

I am using a koolance flow sensor and a digital temp sensor hooked up to a picaxe chip which disables/enables the laser.

ill be fine in london then.

How many fans do you have on the radiator? I think they come in 1, 2, 3 or 4 fan sizes?

I am thinking its best to have a separate cooling circuit rather than put...

Hi

I have just added a pc flow sensor to the water supply and a temperature sensor. I am wondering if I can cool the water using a pc water cooling radiator and fans. I know some people have done...

PS just joking about the 'employee's post. English sense of humour. :)

Forums evolved from the evolution of the interrnet and are meant to be open and free for anyone to comment in. They are not meant for companies to use as sales tools. If they are used as sales tools...

Company employees siigning up to forums, as if they were customers, to make favourable comments about a company.

Also a technique, which I am sure would never happen here ;)

Well I turned it over - flat side down and I appear to be cutting 50 percent faster at the same power. Mainly I am able to get a much tighter focus so the power is more concentrated.
It...

So which way up is the lens meant to be?

Hi
Where do you measure the focal length of a lens from. Is it the front of the lens or the mid point inside the lens.
Also should the lens be a certain way up?

you need either grbl loaded onto the arduino or use the arduno gcode interpreter software that works with reprap which is another gcode interpreter for arduino.

There are various pc and mac...

If the beam is at even a degree off horizontal then it will be hitting different parts of the lens at different points on the table so it could either be hitting a small crack on the edge of the lens...

Check where the beam is hitting the last mirror on the laser head . plus where it hits the lens.
You are getting a reflection somewhere which is causing the double image. Probably its not hitting...

I bought my 40 w tube from a different supplier. The main thing is to make sure the length is identical. Some 40w tubes are different lengths I think mine is 1000 mm (according to the specs I have...

hi phillydee

Where are you getting your flow meter (sensor) in the UK. I havent found one yet here.

hi, actually, looking closer at the wmf file, its a problem with the way wmf represents lines. If the line is bold it actually draws two lines close to each other with a thin fill between. so this is...

I use inkscape to convert to vector and then import into illustrator to save as a dxf

Hi
Check the fill is zero and not white
Also check the shapes haven't got any other filters or effects on them, or any blends etc, even if they are not visible.

Hi

It will overheat within a few seconds without cooling. The tube is working but I imagine it wont for long as once the seal on the coupling is broken, gass will be leaking, even if its very slow.

So by using the second method you are literally switching the beam on and off very fast? How fast?

The pwm method just keeps the beam on but reduces the current.?

I still need to get my head...