Removing bubbles from laser tube

kirill's picture
Submitted by kirill on Tue, 03/11/2014 - 10:53

Laser tubes should not be operated with air trapped within cooling piping as this can cause temperature hotspots and compromise integrity of the tube.

In ideal world, stream of water would remove all the bubbles but in our reci tube there are some welding spots where water becomes turbulent and traps pretty large air bubbles. This trapped air is very hard to remove.

To remove those you can:

Wait

If you wait long enough they will disolve themselves, but it can take hours!

Tilt

You can turn off chiller and tilt entire cutter, all you need to do is get bubbles moving couple of inches away from blocking spot. Obviously this method is only feasable if you have small cutter or someone really strong  (like Vladimir Putin) in your workshop.

Pump cycle

Turn pump on and off, quite often bubbles will move slightly from the deadlock place if you turn off the pump, catch this moment and turn pump again to remove the bubbles. This is quite tricky and does not work all the time.

Turbulences in water flow

Best way we found is to cause turbulences in water flow, all what needs to be done is to pinch and release incoming [from laser tube perspective] water hose once or twice, pinch will cause pump to build up pressure and when you release that pressure is going into the tube causing strong turbulences and removing bubbles. Our CW-5200 chiller pump is connected to coolant pipes using soft silicone joints, those can be easily pinched by hand.

Be careful when pinching, start gently, turbulences and overpressure caused by this are quite strong, if we pinch ours all the way we can almost feel cutter to vibrate on release. It can damage laser tube.

Rear of chiller
Rear of chiller

 

Tags: 
workshop
laser
water

49344 Comments

Anonymous

Russellhix (not verified)

on

Mon, 04/07/2025 - 12:47

prednisone purchase online <a href=" https://op.naivego.com/home.php?mod=space&uid=4674 ">buying prednisone</a> or <a href=" https://cse.google.gm/url?sa=t&url=https://predpharmnet.com ">prednisone 5mg over the counter</a>
http://reklamagoda.ru/engine/redirect.php?url=http://predpharmnet.com generic prednisone 10mg
[url=https://clients1.google.sc/url?q=https://predpharmnet.com]prednisone tablets[/url] prednisone 5 mg cheapest and [url=http://forum.orangepi.org/home.php?mod=space&uid=4978090]prednisone 50 mg tablet cost[/url] average cost of generic prednisone

Anonymous

Groverheage (not verified)

on

Mon, 04/07/2025 - 23:13

buy amoxicillin 500mg canada <a href=" https://www.support-groups.org/memberlist.php?mode=viewprofile&u=353733 ">where can you get amoxicillin</a> or <a href=" https://cse.google.jo/url?sa=t&url=https://amonlinepharm.com ">buy amoxicillin online mexico</a>
https://www.google.com.lb/url?sa=t&url=https://amonlinepharm.com generic for amoxicillin
[url=http://ganbariya.co.jp/index.php?a=free_page/goto_mobile&referer=https:/... 500mg capsules[/url] amoxicillin 500mg tablets price in india and [url=https://www.soumoli.com/home.php?mod=space&uid=163605]buy amoxil[/url] amoxacillian without a percription

Anonymous

MartinDof (not verified)

on

Tue, 04/08/2025 - 01:19

zithromax 250 <a href=" https://www.oppo.xyz/home.php?mod=space&uid=15992 ">zithromax 250 mg</a> or <a href=" https://usachannel.info/amankowww/url.php?url=http://zithpharmonline.com/ ">zithromax 250 mg tablet price</a>
https://www.google.com.kw/url?q=https://zithpharmonline.com zithromax order online uk
[url=http://naturestears.com/php/Test.php?a[]=<a+href=https://zithpharmonline... you buy zithromax over the counter in canada[/url] zithromax 500mg price in india and [url=http://zqykj.cn/bbs/home.php?mod=space&uid=290452]zithromax capsules 250mg[/url] where can i purchase zithromax online

Anonymous

Russellhix (not verified)

on

Tue, 04/08/2025 - 01:39

india buy prednisone online <a href=" https://op.naivego.com/home.php?mod=space&uid=4672 ">prednisone 5mg over the counter</a> or <a href=" http://obchody.forwardo.com/cz/go_preload.php?url=http://predpharmnet.com ">prednisone 20 mg tablet price</a>
http://igrab.me/share-email.php?url=https://predpharmnet.com prednisone 20 mg purchase
[url=https://www.google.je/url?q=https://predpharmnet.com]order prednisone 10mg[/url] prednisone 20mg online pharmacy and [url=https://quantrinet.com/forum/member.php?u=780628]drug prices prednisone[/url] buy prednisone online australia

Anonymous

Damonblesy (not verified)

on

Tue, 04/08/2025 - 04:22

can i buy cheap clomid tablets <a href=" http://mi.minfish.com/home.php?mod=space&uid=1308735 ">get clomid without rx</a> or <a href=" https://maps.google.com.mt/url?rct=j&sa=t&source=web&url=https://clomfas... ">cheap clomid tablets</a>
https://images.google.jo/url?sa=t&url=https://clomfastpharm.com where to buy generic clomid
[url=https://www.google.dm/url?q=https://clomfastpharm.com]where to buy generic clomid pills[/url] where to get clomid and [url=https://www.support-groups.org/memberlist.php?mode=viewprofile&u=353959]can i get clomid without insurance[/url] cost of clomid for sale

Anonymous

Russellhix (not verified)

on

Tue, 04/08/2025 - 14:25

canine prednisone 5mg no prescription <a href=" http://umsr.fgpzq.online/home.php?mod=space&uid=6174 ">prednisone 10mg for sale</a> or <a href=" https://cse.google.li/url?sa=t&url=https://predpharmnet.com ">prednisone tablets india</a>
https://images.google.com.nf/url?sa=t&url=https://predpharmnet.com::: buy prednisone online usa
[url=http://www.tifosy.de/url?q=https://predpharmnet.com]order prednisone online canada[/url] prednisone 2.5 mg daily and [url=http://80tt1.com/home.php?mod=space&uid=3121758]prednisone 10mg prices[/url] prednisone 20 mg in india

Anonymous

Groverheage (not verified)

on

Tue, 04/08/2025 - 17:09

can you buy amoxicillin uk <a href=" http://www.bqmoli.com/bbs/home.php?mod=space&uid=28354 ">where can you get amoxicillin</a> or <a href=" https://islamcenter.ru/go.php?url=https://amonlinepharm.com ">amoxicillin order online no prescription</a>
http://www.intrahealthgroup.com/?URL=https://amonlinepharm.com amoxicillin 875 mg tablet
[url=http://www.iheartmyteacher.org/proxy.php?link=https://amonlinepharm.com]buy amoxicillin 500mg capsules uk[/url] amoxicillin 500mg prescription and [url=https://bbs.xiaoditech.com/home.php?mod=space&uid=2681933]can we buy amoxcillin 500mg on ebay without prescription[/url] 875 mg amoxicillin cost

Pages

Add your comment

More information about text formats

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.