Hi, purchased a -1 just before the new -2 version came out
I was not a fan of the wooden parts on so I got alu. brackets and ordered some other alu. angles, U-shapes and so on to replace these components from the start.
Later ordered all the 24V parts with a new power supply to make it like a -2.
After the assembly of the frame it felt not as sturdy as I hoped for.
Felt like there was nothing in the assembly that pulled the frame together, thought about banding it like they do with shipping crates, wrap metal strip around it and secure with a crimp tool, but that might be a problem for later changes.
Instead I redesigned the frame and tapped all the ends of the profiles with M6 tread.
Moved the 2040 x 500 sides to the front/back and replaced them with 2 new 2040 x 460 long pieces.
Purchased M6 x 20 mm button heads and drilled the extrusions on precise locations with 6.2 mm holes.
These holes then where used to tighten the button screws with a hex key, see picture.
After this mod the printer could stand on its own without any corner supports, no deformation when moved.
So far only added 2 pieces 2040 by 460, used all frame components that came with the kit.
Also read here about a fire hazard that can happen with any printer so no wood is a plus here.
If you want to make a enclosure for this unit I was not thrilled about using any type of plastic.
Toxic fumes from burning abs, pvc lexan etc..
So I used Hardi backer board, does not burn, is a insulator but needs some attention to cut to size.
And cost $12 a sheet, 3 x 5 ft 1/4" thick
Top corner is secured with M6 x 20
Frame design with z-drive.
Used 60 teeth pulleys on rod, 20 on stepper with 8mm/rev travel on rod
this is 600 (3 x 200) steps for 8mm =75 steps/mm or 15 steps for every .2 mm.
using 1/32 micro stepping that would be 480 micro steps (15 x 32), 960 at 64 ms
Got the same power supply as mentioned in mlee post, power supply failing, review on amazon says it is noisy.
think this is due to the small opening for the fan exhaust.
Cut a 2.25" hole in mine and positioned the fan outside the power supply
Have not turned it on yet.
Made some more changes and will post them later