I keep coming back to the idea of using a focusable lens instead of

I keep coming back to the idea of using a focusable lens instead of raisable bed, does anyone know definitively if these things will work, I’ve seen them around ebay and the like. http://www.banggood.com/Aluminum-Alloy-Laser-Head-Laser-Engraving-Machine-Part-p-959118.html

It works, but only for cutting. To much mass for engraving at any normal engraving speeds.

I’ve wondered that about just adding the air assist hose to the normal nozzle.

What speed should these machines be able to do comfortably? At the moment I get a chatter above even 50, haven’t looked into that yet.

adding a air assist hose is a “must” so you have to take the extra weight with that. 50 mm sounds slow but its been a while so dont’ know the last setting i used. (ive upgraded to lightobject DSP dont know if its fair to compare :wink: )