how to make a secondary mirror
Posted 22 May 2012 - 05:40 PM
I have blocks already cut side, now I have to know how they stay flat, these two blocks are more plans that did consegui.Eu flatness test plan with precision 1/4 lambda I won.
Could someone explain to me quite sure how I should do to make my plans side mirrors?
Posted 23 May 2012 - 07:07 AM
Beeswax isn't very stable, so once you start, it's a good idea to finish them within a day or so.
Posted 23 May 2012 - 07:11 AM
The ones below were done as a 3-spot block. The test was done next morning, but you can see how the individual pieces moved slightly overnight. It helps to have a good reference flat to test with. Make sure you mount them and the blocking on a secure and firm backer, such as an aluminum disc. Mine are 1" thick.
Posted 11 June 2012 - 01:24 PM
Is there any link that explains how to do everything right?