<div dir="ltr">We have a 150W CO2 laser and have been running the znse lenses from eBay, they work fine. They're spec'd by the diameter of the lens and the focal range, so just pick the right diameter and focus length and you should be in good shape. MAKE SURE YOU PUT IT IN WITH THE DOMED SIDE TOWARDS THE OBJECT TO BE BLASTED (flat side towards the tube). For mirror replacement some folks have had luck with metal hard drive platters but we haven't tried them on ours (or higher wattage lasers, <75W have had success, I'm guessing it's fine but it hasn't been tested yet).<div>
<br></div><div><br></div><div><br></div><div>Chris</div><div class="gmail_extra"><br clear="all"><div>Chris Meyer<br>Director<br>Sector67<br><br>608-241-4605<br><a href="http://sector67.org" target="_blank">http://sector67.org</a><br>
<br>2100 Winnebago St<br>Madison, WI 53704<br></div>
<br><br><div class="gmail_quote">On Tue, Mar 25, 2014 at 7:10 AM, Peter Kuhm <span dir="ltr"><<a href="mailto:peter@null.priv.at" target="_blank">peter@null.priv.at</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
Metalab has a 60W EPILOG Legend 36EXT since 2009-08-26<br>
<a href="http://metalab.at/wiki/Lazzzor" target="_blank">http://metalab.at/wiki/Lazzzor</a><br>
we bought it as good as new (used only for showroom/fair)<br>
<br>
In Sept/Oct 2012 we had the aged laser tube changed and new we<br>
need to replace the focus lens (focus point in 2" distance)<br>
<br>
It is sort of consumable, was already not in best condition.<br>
cf <a href="http://asset-0.soup.io/asset/3878/2798_0db6.jpeg" target="_blank">http://asset-0.soup.io/asset/3878/2798_0db6.jpeg</a> from last year<br>
<br>
But now someone used it w/o checking the lens condition and it<br>
cracked from to heat build-up due to carbon black deposits.<br>
<br>
<br>
My question: Epilog original spare part via German<br>
distributor costs us something like EUR 220/320 (excl VAT)<br>
<br>
Has someone on the list here used a different source and<br>
can share experience?<br>
<br>
beside physical dimension the focus length is important<br>
<br>
(we want to stick to the 2 inch).<br>
<a href="http://support.epiloglaser.com/article/8205/42831/focus-lens-101" target="_blank">http://support.epiloglaser.com/article/8205/42831/focus-lens-101</a><br>
<br>
colleagues found much cheaper ones, e.g.<br>
<a href="http://www.alibaba.com/product-detail/Co2-Laser-Focus-Lens-Diameter-20mm_708952502.html" target="_blank">http://www.alibaba.com/product-detail/Co2-Laser-Focus-Lens-Diameter-20mm_708952502.html</a><br>
<br>
Any comment on focus quality (narrowness of the spot) and how<br>
the alterative source can handle 60 Watt in continous service<br>
would be appreciated.<br>
<br>
Hack on,<br>
Peter<br>
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</blockquote></div><br></div></div>