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Messages - wild.bill

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1
Engraving / Re: Clocks.
« on: December 17, 2018, 08:17:23 PM »
Hour hand goes on first and presses onto the plastic sleeve. It does not need to go on very far. Then the minute hand goes on the end of the shaft and then the nut to hold it in place.

2
Engraving / Re: Clocks.
« on: December 17, 2018, 06:14:07 PM »
It is a PDF and you will need to convert it. A diode laser can do all the engraving but might have a hard time cutting the outline and a lot of materials. I did mine on a CO2 laser.

I had that clock on the wall for a long time and just last week I got tired of seeing it so I gave it away.

3
Engraving / Re: Clocks.
« on: December 17, 2018, 05:32:39 PM »
Just a few - it gets addictive. I get my clock parts from Michaels as well.

4
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 23, 2018, 03:20:29 PM »
There is enough info in the video's to pull it all off. I will attach a PDF that Russ made for how he hooked his up. It is very consuming time wise to watch all of the video's and I found some were not of interest so I just skipped them. But there is a great deal of good information. The title says RD Works but most is very useful for any Co2 laser and host software.

On the controller "status" is active low and is active whenever the machine is running. That is the one that I used for the extraction fan. Wind is active low and active when the machine is running and air assist is asked for. Where Russ shows a relay for the air pump I used an SSR designed to switch AC an I think it will work with up to 300V AC so it would be good with 120V or 240V.

This is the Pneumatic Electric Solenoid that I use for switching the air assist https://www.amazon.com/gp/product/B00VTULZTU/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

5
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 22, 2018, 03:54:12 PM »
I have used both and like LightBurn much better for creating, but there are still some
config things that you need RD works for.

6
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 22, 2018, 02:34:40 PM »
Here is another clock, 2 layers of MDF and one layer of acrylic (the bowl) on top.

7
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 22, 2018, 02:31:29 PM »
Most of the machines like this have the lens installed upside down from what we want for cutting.

Watch the RDWorks Learning Lab video's and Russ talks about this.

The machines are sold as engraving machines, not cutting machines. With the lens upside down you can get a smaller dot with very shallow focus which might be better for engraving. It is a good idea to figure out the focal length of the lens both ways and work out the configuration that gives the best engraving.

The focus gauge that came with the machine could be correct for curved side down.
It sounds like you are doing well with the machine and understanding it which is great.

Other idea's that I got from Russ's video's are having the controller turn my exhust fan on/off (via SSR) when I start a job so I don't have to listen to the fan when I am not actually using the machine. I also turn the air on/off, I always have a small amount of air going through the nozzle to keep smoke away from the lens and a higher volume when air assist is needed and the air valves are controlled by the controller as well.
A clean lens is a happy lens.

For fine image engraving on wood I find that my diode laser does a better job (but takes longer), but for cutting the Co2 laser is far better. I cut a lot of acrylic parts, and make things with MDF like clocks.

8
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 15, 2018, 05:36:10 PM »
Good to see you got the machine with no problems. Sounds like your's is like mine, well assembled and aligned. Worked well out of the box, or should I say crate.

First thing you should do is add a mA meter and do a profile of the power % vs current. On my machine the tube is at max power when the controller is set to 65%.

It gets expensive if you start over driving the tube.

Good luck with it.


9
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 01, 2018, 03:31:55 PM »
There is no agreement on what the max temp should be. The doc's that came with my laser says keep it below 25c but there are a lot of people that say less than that. I try to keep mine between 18c and 20c.

10
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 01, 2018, 09:32:23 AM »
I have a PC cooling fan radiator in line where the water comes out of the laser which does the same as the 3000 for far less money.

Some things I have/do for safety of the tube, I have a digital thermometer measuring the water temp at the pump where the water is picked up and the head is mounted so I can see it all the time (I never leave the machine while its running). This machine has a pause button so you can always stop a job for a while and continue later. I actually use the pause more than expected, because of power consumption I can run the laser and compressor at the same time (I have a big compressor for the whole shop) so I pause the laser, run the compressor to build pressure up, and then continue the job.
So if I am watching the temp and it starts to get high I can pause, go get an ice bottle and put in the tank, wait for it to cool down and then continue the job so I never risk the tube and never leave the machine.

Also if you are going to get a machine like this you SHOULD watch these videoshttps://www.youtube.com/user/SarbarMultimedia/playlists

11
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 01, 2018, 08:36:57 AM »
For the cooler I took a different approach, I use a 10 gal fish tank. I keep the machine in the basement of the house so in the winter its cool enough with just the tank. In the summer time I have 1 gal mike bottles with frozen water that I put into the tank to keep the water cool. For the work I do the cut's are quick and I don't do many at a time so the water does not heat up much, and if I am doing etching it takes longer but the power level on the laser is very low so it does not generate much heat and can run several hours with no problem. It was a cheap way to start and after watching the temp's never got a proper cooler.

12
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 01, 2018, 08:20:51 AM »
The second window is the revised design. The  RED shown is the older design, if to look you can see the buttons for the motors. I didn't think there were any of the older design left in the country. The new design is available in red as well as yellow.

13
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: October 01, 2018, 08:14:05 AM »
the yellow machine is the same as the red one. On the side there are three connectors, USB for the computer, USB for a memory stick, and ethernet (which is often not connected to the controller).

14
General Discussion / Re: $2000 Budget - help me choose a CO2 Laser.
« on: September 30, 2018, 12:09:32 PM »
The laser you have the point to is a RedSail clone and is not a bad machine. I have the previous version of this machine. It is a single tube machine and the version shown does not have power Z axis - but does have a manually adjusted Z axis. Mine does have the power Z axis but don't let the add's mislead you. The power Z has up/down buttons and is not connected to the controller so the difference is pushing a button vs twisting a knob.

I have found the construction of this machine MUCH better than my K40. The thing to look at carefully is the delivery costs. All the vendors are a little different but most charge extra for home delivery without a loading dock (the delivery truck needs a lift gate).

15
T2 Engraving / Re: Compatible Lasers
« on: September 06, 2018, 10:48:55 AM »
I put a Cohesion3D board in my K40 and you can use T2Laser with that board.
http://cohesion3d.com/

I use this board with one of my diode laser (OpenBuilds ACRO) systems as well.

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