Achromat and Asian Tube

[Park Edwards]

I've got my own achromat, but no ring to put them in. It measures 51mm but doesn't fit inside the thorlabs 52mm Ring. I'm going to purchase the Asian Spacer

http://cgi.ebay.com/55mm-Spacer-Ring-Adapter-55-mm-Metal-Special-Filter_W0QQitemZ300047837295QQihZ020QQcategoryZ30059QQtcZphotoQQcmdZViewItem

How or what would be a good way to mount the Achromat inside and keeping it secure?

 

[twocik23]

It's either a custom job or JB weld. You could buy an asian macro that might fit it. I had the inter diameter some where around here, I'll try and find it for you. If it's not an exact fit, you'll need to find something to house the glass, then JB weld it inside to the walls of the spacer tube.