Hi Tony, I’m sure you won’t remember me but you kindly showed me your LowSpec at the BAA Winchester weekend in April last year after your presentation. Thus inspired I’ve finally taken delivery of a Wanhao Duplicator I3 Plus printer and have been exploring the details of the LowSpec 3 on Thingiverse. I’m trying to verify that I can readily source all of the optical parts and the hardware. I see there is a micrometer incorporated into the design but am struggling to find a suitable device. Can you let me know details please? Also, what printer filament have you found most suitable? Thanks, Chris.