The laser cutter we have is
nice functional. This is good
It is also small. Hence begins the enlargening.
Plans here will be inspired by Further Fabrication.
Build Volume: 1200*2400mm Laser: 100W CO2 (Or better)
Construction: Aluminium Extrusion Frame Safety: Estop + Lid Catches + Laser Proof Plex (Apparently any Perspex Will Do)
Nice To have: Crapveyor to remove gunk
Nice to have: front and at least one end of the casing hinged so full-size sheets can be put in flat. Possible roller at bed height to ease single person operation.
Sourcing + Pricing estimates
Building a frame out of Aluminium Extrusion would be easy and quick to assemble, and strong enough for a laser.
Currently overestimating Extrusion dimensions to 1500*300*2500mm to give some slack
|Base||2020||2*1500+2*2500||-2*20mm On some|
|Top||2040||2*1500+2*2500||-2*20mm On some|
|Laser Gantry||2040||1500||Going short length to hopefully reduce sag|
|Bed||2040||2*1300+2*2450||Hopefully enough slack|
|Outer Enclosure||2020||4*500+2*3000+2*2000||TODO: Close Bounds|
|Lid||2020||2*2000+2*3000+N*2000||N>=2, -2*20mm On some|
|Misc Standoffs||2020||500||Hopefully enough slack|
|Misc Standoffs||2040||500||Hopefully enough slack|
"-2*20mm On some" means 2 20mm cuts off either of the sets to make a regular correctly sized rectangle
- 2020: 37.1m
- 2040: 22.8m
Sources of Aluminium Extrusion:
* Found under Automation Components -> Framing * 2020: €5.4 per m per 4m length * 2040: €9.7 per m per 4m length
* Priced for 6mm slot * 2020: £4.40 per m; £0.75 per cut MaxLen 6m * 2040: £6.60 per m; £0.75 per cut MaxLen 6m
At Cheapest Price: 38*4.40 + 23*6.60 = £319 ex VAT
TODO: Laser+Laser Gear Sourcing
Possible: DIY as people have built laser tubes before
China Express puts Nema17s at <£10 per motor; and 23s at <£20 per motor