Search found 139 matches

by SWMS
Fri Dec 15, 2017 2:36 am
Forum: Temperature Controller
Topic: Water temp safety
Replies: 4
Views: 65

Re: Water temp safety

Re dew point. That depends on the relative humidity in the room. It doesn’t have to be 24-25 degrees.


http://www.dpcalc.org/
by SWMS
Sat Dec 09, 2017 3:18 am
Forum: Temperature Controller
Topic: Water temp safety
Replies: 4
Views: 65

Re: Water temp safety

There isn’t. Your chiller should be able to cope with the laser though. 15-25 degrees is the safe range. Don’t fire it under that temperature you can thermally shock the tube and end up with a nice crack. If you are using a buffer ( 20ish litre tank of water ) then you might be able to buy some kind...
by SWMS
Thu Nov 30, 2017 8:18 pm
Forum: D40/K40 small chinese CO2 laser machine
Topic: In Progress
Replies: 45
Views: 1497

Re: In Progress

By the way. What are your acceleration settings in the manufacturer parameters?
by SWMS
Thu Nov 30, 2017 12:53 am
Forum: CO2 Laser Discussion
Topic: Pro mount mirror adjustments
Replies: 1
Views: 93

Re: Pro mount mirror adjustments

Undo the two hex bolts closest to the thumbscrews. They are for ‘double locking’ it in place. Unscrew the brass screws, turn your thumbscrews to position, repeat until it’s calibrated. Then lock the brass ones back and screw in the hex bolts.
by SWMS
Tue Nov 21, 2017 11:36 pm
Forum: D40/K40 small chinese CO2 laser machine
Topic: In Progress
Replies: 45
Views: 1497

Re: In Progress

Just a thought. Have you tried moving the head to, for example the left of the machine and then press origin, then fire the laser to create a datum point. Then move the head elsewhere but don’t press origin. Create a Vector file that has a dot at the origin point. Then create a square at a known dis...
by SWMS
Tue Nov 21, 2017 4:46 pm
Forum: D40/K40 small chinese CO2 laser machine
Topic: In Progress
Replies: 45
Views: 1497

Re: In Progress

To add something here. Have you made sure your v wheels barely have any friction on the rails? You should be able to just about spin the wheel by hand. Get some GT85 and put some on your wheels and rails. Take all your cogs off all your drive shafts and steppers and if there isn’t one file a flat on...
by SWMS
Mon Nov 13, 2017 7:27 pm
Forum: CO2 Laser Discussion
Topic: Real time auto focus tracking system for CO2 laser
Replies: 8
Views: 239

Re: Real time auto focus tracking system for CO2 laser

I’ll help if you send me a free prototype to test :lol: hah.

So the second one is a laser head with integrated autofocus rather than these bolted in proximity switches. ?
by SWMS
Thu Nov 09, 2017 9:33 pm
Forum: CO2 Laser Discussion
Topic: Real time auto focus tracking system for CO2 laser
Replies: 8
Views: 239

Re: Real time auto focus tracking system for CO2 laser

So to calibrate the focus lens you’d have to put the head at the limit of its extension so that when at its shortest extension it stays focused? I assume it works by bouncing a IR beam off the surface of the material that then returns a voltage and that tells you how far away it is. So then you have...
by SWMS
Mon Nov 06, 2017 1:39 pm
Forum: CO2 Laser Discussion
Topic: Real time auto focus tracking system for CO2 laser
Replies: 8
Views: 239

Re: Real time auto focus tracking system for CO2 laser

So the system works independently of the DSP and it’s only the focus lense tht moves up and down?
by SWMS
Mon Nov 06, 2017 12:09 am
Forum: CO2 Laser Discussion
Topic: Real time auto focus tracking system for CO2 laser
Replies: 8
Views: 239

Re: Real time auto focus tracking system for CO2 laser

That looks heavy!

Would you need a larger motor on the x axis? I suppose if you are going for autofocus you may as well have closed loop hybrids.
by SWMS
Sun Oct 29, 2017 2:48 am
Forum: D40/K40 small chinese CO2 laser machine
Topic: stepper motor noise
Replies: 1
Views: 147

Re: stepper motor noise

They do whine when on hold. I think it’s when they are between steps and micro stepping. I recently upgraded to hybrid closed loop motors. They are much quieter,smoother and also don’t stop with as much inertia as steppers so have far less vibration.
by SWMS
Sun Oct 29, 2017 2:45 am
Forum: CO2 Laser Discussion
Topic: gunk in tube: what to do?
Replies: 2
Views: 131

Re: gunk in tube: what to do?

I’ve had problems with mould /gunk too. The best thing to do is clean your buckets and lines with a sterilising solution. That could be a weak bleach water mix or the stuff they use for cleaning lines in a pub. Then add something like Milton sterilising fluid or iodine every few weeks. It doesn’t ma...
by SWMS
Sat Aug 26, 2017 10:46 pm
Forum: Tips and new on the DSP & Software
Topic: Any Lasercad alternative out there?
Replies: 10
Views: 1281

Re: Any Lasercad alternative out there?

You don't need to use a plugin to run Corel Draw with RayCam, LaserCad or any of those programs. All the macro does is export it as a dxf in the background and open the file for you. Yes it's a bit of a pain to have to manually export it but it works. If you have Corel Student Ed the macro will neve...
by SWMS
Fri Aug 25, 2017 9:22 pm
Forum: CO2 Laser Discussion
Topic: 1800x1200 Gantry Vibrations
Replies: 3
Views: 470

Re: 1800x1200 Gantry Vibrations

What kind of steppers are you using? I recently upgraded to closed loop steppers after a fire and the lower resonance of the closed loop steppers is amazing! Edit - Just woke up and all my best ideas are when I wake up. You are basically experiencing what machinists call chatter. If the simple steps...
by SWMS
Wed Aug 23, 2017 9:01 pm
Forum: DSP X7
Topic: Autofocus sensor (pen Style) on X7 DSP
Replies: 8
Views: 544

Re: Autofocus sensor (pen Style) on X7 DSP

As far as I am aware no amateur / semi pro laser does continuous autofocus. You have two options. First option Run two jobs. One for one end of the pipe. One for the other. Second option My advice would be choose a lens with a long focal point and set the focus half way between your minimum and maxi...

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