Search found 31 matches

by glenboy
Fri Apr 27, 2012 4:33 pm
Forum: Help or advice required please
Topic: Bulbs and Vents
Replies: 1
Views: 1832

Bulbs and Vents

Hi Y'all, Hope everyone is enjoying the rain! Which leads me onto my first question. Currently I just dangle a flexible (5") hose out of the window for my vent. It's ok. I get a bit of smoke blown back in on windy days but more recently the horizontal rain we have been experiencing is posing more of...
by glenboy
Mon Mar 19, 2012 3:09 pm
Forum: Help or advice required please
Topic: Laser Tube Safety
Replies: 2
Views: 1760

Laser Tube Safety

Hi All, Is it dangerous to have the laser tube visible during operation? Seen a few videos of home made laser cutters and the tube is positioned at the back of the machine but is not covered like the LS machines. I assume radiation is only emitted from the business end and viewing the side of a tube...
by glenboy
Fri Mar 09, 2012 8:38 am
Forum: Off Topic
Topic: What's your favourite?
Replies: 4
Views: 5179

What's your favourite?

It's a tough one....

Tea and Chocolate??........or......... Tea and Toast??

Tea and chocolate for me. :P
by glenboy
Sat Mar 03, 2012 9:53 pm
Forum: Help or advice required please
Topic: Power Varies During Cut
Replies: 10
Views: 4227

Re: Power Varies During Cut

No worries Endcan - I've got a 50L tank and an inline chiller. Tube had just come to the end of it's useful life after a year. Had quite a lot of use of late. I should have just changed it straight away - i knew the alignment was good and keep the optics clean. Ah well - it's sorted now so I can wor...
by glenboy
Sat Mar 03, 2012 8:20 pm
Forum: Help or advice required please
Topic: Power Varies During Cut
Replies: 10
Views: 4227

Re: Power Varies During Cut

Sorted! T'was the tube all along!

New tube installed and cutting is back to normal!

Glen
by glenboy
Sat Mar 03, 2012 1:20 pm
Forum: Help or advice required please
Topic: Power Varies During Cut
Replies: 10
Views: 4227

Re: Power Varies During Cut

Just had another look at alignment... I am gettin a "double beam" out of the laser. Pic below is a single test fire at mirror 1 and mirror 2. I fire the laser once and I get a 2 burn marks. Does this mean I can narrow it down to a dying/wounded tube? http://s18.postimage.org/3pj6qxb1l/IMG_3169.jpg i...
by glenboy
Sat Mar 03, 2012 11:49 am
Forum: Help or advice required please
Topic: Power Varies During Cut
Replies: 10
Views: 4227

Re: Power Varies During Cut

Hi Peter, Thanks for the advice. I have ensured the card is perfectly flat and supported on the bed. I am still having issues http://s8.postimage.org/55nazi0d1/IMG_3164.jpg image hosting gif Up until a week ago, the laser would cut through perfectly each time - no card "cut-outs" would remain on the...
by glenboy
Fri Mar 02, 2012 8:39 am
Forum: Help or advice required please
Topic: Power Varies During Cut
Replies: 10
Views: 4227

Re: Power Varies During Cut

Hi PhillyDee & Bob, Thanks for the advice. Looking at how I hold my card, it is very possible that the air assist could blow it out of focus. I support the card along 3 edges and have it raised 5 mm off the bed to prevent any backflash. Very possible that the card sags or is blown by the air assist....
by glenboy
Thu Mar 01, 2012 11:34 pm
Forum: Help or advice required please
Topic: Power Varies During Cut
Replies: 10
Views: 4227

Power Varies During Cut

Hi, Got a new lens from HPC and it's definitely improved the quality of my cuts. However, When I am cutting a design out of card it will randomly not cut all the way through in some parts, almost as if the tube power is up and down during the cut? Could this be a problem with the potentiometer? or a...
by glenboy
Wed Feb 29, 2012 10:05 am
Forum: Help or advice required please
Topic: Tube Power Decline
Replies: 3
Views: 1904

Re: Tube Power Decline

Hi Simon/Steve, Thanks for the info/advice. I tried replacing the lens with a one I have from China (it has a smaller diameter and the collar doesn't allow air assist) just to see if that would make a difference. Seems to have solved the issues. So I have purchased a new lens from HPC - hopefully th...