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Lens Issue

Posted: Mon Jan 09, 2017 12:29 pm
by Nathan Hunsworth
Evening all, you would not believe the luck I am having, after a full rewire of the laser cutter and I do mean full.over the holidays and a replacement controller. Loads of thanks and appreciation to Keith and all on here for the support while doing all this troubleshooting.

I have finally got around to running some small test jobs on the cutter to see how it performs and noticed it was having real issues cutting 4mm acrylic. So a full check or everything I found the following


So question if I am going to replace this any recommendations, the diameter is 18mm.

Have found the following, any thoughts or recommendations

Re: Lens Issue

Posted: Mon Jan 09, 2017 12:49 pm
by Gene Uselman
Do you know for a fact that you have a 2" (50.xmm) lens? Beyond that- with my 130w laser I use cheap lenses from all different sources and don't notice a lot of difference (I buy a couple at a time as they are expendable)- with a low power laser I believe a HQ lens will work better (less loss) at 2-2.5x the price. It kinda depends on if you feel your power is adequate. Your laser almost certainly came with a cheap lens so hopefully you got to try it out enough to get a feel for how much power you had cutting what you are likely to cut. Gene

Re: Lens Issue

Posted: Mon Jan 09, 2017 12:58 pm
by Nathan Hunsworth

Thanks I know it was a 2" FL Lens as before the controller died at Christmas I had done a number of tests and worked it out.

Will see what others are out there

Re: Lens Issue

Posted: Wed Jan 11, 2017 2:07 am
by Alexis Tzoulis
I bought a HQ 1.5'' lens from cnccheap and after a month lens became blurry.

Re: Lens Issue

Posted: Wed Jan 11, 2017 6:21 am
by Doug Fisher
You might talk to the people at Light Objects and ask them what you get for the different price points. They seem to be reputable if you are willing to pay a little more for a domestic seller. You just never know what you will get ordering from unknown sellers on ebay, amazon and alibaba.

Re: Lens Issue

Posted: Wed Jan 11, 2017 12:37 pm
by Michael Dunning
This is the vendor I have used for both my 1.5" and 2.0" HQ lenses. So far I've been happy.