which kind of anti-freeze agent

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Ron Gosnell
Posts: 52
Joined: Sat Dec 03, 2016 1:05 pm
Location: Arkansas

Re: which kind of anti-freeze agent

Post by Ron Gosnell » Sat Dec 03, 2016 7:11 pm

My 130 watt has sat unused for a little more than a year due to injuries. I have the 5200 chiller. I added just enough antifreeze to barely color the water. Like 1/4 cup to the tank. After a year of total neglect I checked the tank, lines and tube. No mildew, no cracks, no problems. I fired up the machine and ran a few test pieces. Surprisingly enough everything is working just as I have left it.
I learned of the use of antifreeze from a different forum before I found this one and the majority of glass tube users are running this way. I can not condone or advise anyone else to do this because there is a whole lot of controversy on this subject. All I can do is say that it has worked out for me. I only had a few hours on it when I shut it down so I really have no data on longevity with usage.

Gozzie
Gozzie
ThunderLaser Mars 90 130 watt 900 x 600 TL
Ruida 644XG Controller RDWORKS 8.01.18
Windows 10 Ethernet Connected

Doug Fisher
Posts: 517
Joined: Sat Aug 20, 2016 12:42 pm
Location: Atlanta, Georgia, USA

Re: which kind of anti-freeze agent

Post by Doug Fisher » Sun Dec 04, 2016 9:09 pm

What brand and version did you use, Ron?
80 Watt 700mm x 500mm Ke Hui KH-7050 Laser (Similar to the Red Sail),T.R.
LaSea/EFR F2 Series laser tube, RuiDa RDC6442G EC controller, 2" lens, RDWorks v8.01.18, CW 5000 chiller, Chuck type of rotary attachment
Doug

Ron Gosnell
Posts: 52
Joined: Sat Dec 03, 2016 1:05 pm
Location: Arkansas

Re: which kind of anti-freeze agent

Post by Ron Gosnell » Mon Dec 05, 2016 12:07 am

I use regular prestone green. Very diluted.
Gozzie
ThunderLaser Mars 90 130 watt 900 x 600 TL
Ruida 644XG Controller RDWORKS 8.01.18
Windows 10 Ethernet Connected

Charley Anderson
Posts: 10
Joined: Thu Jan 05, 2017 7:51 pm
Location: Victoria, Australia

Re: which kind of anti-freeze agent

Post by Charley Anderson » Fri Jan 06, 2017 4:03 pm

Is there any implications on the tube performance if the coolant is very cold?
I do a bit of brewing and have glycol chilled font that the coolant sits in a container in a chest freezer with a modified thermostat that keeps it at about 3deg C.
Is there an advantage in running a similar setup to cool the laser? Or is there no real gain keeping it that cool?
Would end up pretty cost effective and the chest freezer running at fridge temps uses next to no power so cheap to run.

Cheers
Charley

Laser: eBay Redsail X700 60w(50w) copy
Bed Size: 500 x 700mm
Home Position: Top Left
Windows: 10
RDWorks: 8.0.32

Charley Anderson
Posts: 10
Joined: Thu Jan 05, 2017 7:51 pm
Location: Victoria, Australia

Re: which kind of anti-freeze agent

Post by Charley Anderson » Fri Jan 06, 2017 10:37 pm

Never mind, just found some info on it, it seems 16-20deg C is the sweet spot, too cool and you can end up with condensation problems.
Charley

Laser: eBay Redsail X700 60w(50w) copy
Bed Size: 500 x 700mm
Home Position: Top Left
Windows: 10
RDWorks: 8.0.32

Don Flynn
Posts: 12
Joined: Sun Nov 20, 2016 11:33 am
Location: Chicago, IL

Re: which kind of anti-freeze agent

Post by Don Flynn » Thu Jan 12, 2017 11:39 am

I been using propylene glycol for past 8 months. 30% propylene glycol 70% distilled water. I have had no issues.
Chinese Laser 60 Watts. Bed Size 500mm X 300mm Home Position:TL.
RDWorks v8.01.18 on Windows 10

Don

Michael Dunning
Posts: 42
Joined: Sun Nov 27, 2016 1:02 am
Location: Alabama USA

Re: which kind of anti-freeze agent

Post by Michael Dunning » Thu Jan 12, 2017 5:33 pm

Here's an image showing the temperature protection versus mixing ratio of common antifreeze (propylene glycol). While adding more antifreeze lowers the freezing point, it also reduces the mixture's overall cooling capacity, so try to use as little as possible.

Image
EBay Chinese 60W (45W actual) laser cutter, 700x500mm, (TR)
RDWorks V8.01.18 and V8.00.27
Michael

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