Seeking advice from you experienced drivers of the K40
Mu machine came with a missing lens and bent and broken carriage for the head.
Would this be a good replacement part? Air assist is a needed modification anyways as far as i hae read up here. Looks by the thumbscrew on the head that this has head has a variable focal point too(?)
Looks like it would do the job, however keep in mind that particular listing is without mirror or lens (& the lens required for this part is larger than the stock lens; 18mm as opposed to stock 12mm).
Or use the stock lens - just get yourself an 18mm nylon washer with a 12mm inner hole or drill out whatever hole the washer has. You can find them at Lowes or Home Depot.