Wilson TS Bill of Materials
The parts list below is the default for Wilson TS, which uses all metric components and has a 200mm x 200mm x 200mm (XYZ) build volume.
There is an OpenOffice spreedsheet in the github repository which will assist in generating a BOM for other build volumes.
You can easily use other lengths of rods and extrusions if more convenient to source. I don't recommend trying to extend the Z axis up a lot though, because the stress on the lower frame mounts may become too much.
Also note that the Z axis lengths here were determined with my particular J-Head hot end, which sticks down about 40mm below the bottom of the extruder, and includes 3mm of glass on top of the heat bed.
Parts List
Mechanical parts
| Item | Quantity | Length / Note | |
| 2020 Extrusions (20mm square, t-slot) | |||
| Vertical frame piece (sides) | 2 | 400mm | 
|
| Horizontal frame piece (top and bottom) | 2 | 330mm | |
| Y axis piece | 2 | 400mm | |
| M8 Smooth Rods | |||
| X-Axis | 2 | 370mm | 
|
| Y-Axis | 2 | 400mm | |
| Z-Axis | 2 | 350mm | |
| Threaded Rods | |||
| M5 threaded rod for Z axis | 2 | 325mm | 
|
| Belts & Pulleys | |||
| Y axis GT2 timing belt (w=6mm) | 1 | 850mm | (start with 1m in case this is a little off) |
| X axis GT2 timing belt (w=6mm) | 1 | 930mm | (start with 1m in case this is a little off) |
| GT2 pulley | 2 | ||
| Nuts & Bolts | |||
| M5 x 10mm machine screw | 51 | ||
| M5 hex nut | 2 | ||
| M5 t slot nut | 51 | ||
| M4 x 20mm machine screw | 7 | ||
| M4 hex nut | 7 | ||
| M3 x 10mm machine screw | 11 | ||
| M3 x 14mm machine screw | 24 | ||
| M3 x 30mm machine screw | 10 | ||
| M3 x 60mm machine screw | 2 | These are for the hinged lever of the direct-dirve extruder. You may be able to use 50mm screws if your springs are shorter than 25mm | |
| M3 hex nut | 18 | ||
| M3 lock nut | 13 | ||
| M3 washer | 17 | This number is approximate | |
| M2 x 16mm machine screw | 6 | These and M2 nuts for mounting end stops | |
| M2 hex nut | 6 | ||
Printed Parts
| Printed Parts – Required | ||
| X end idler | 1 | 
|
| X tensioner | 1 | 
|
| X end motor | 1 | 
|
| X carriage | 1 | 
|
| Y bearing holder | 4 | 
|
| Z motor holder, left Z motor holder, right |
1 of each | 
|
| Z rod holder, left Z rod holder, right |
1 of each | 
|
| Z endstop holder | 1 | 
|
| Idler bearing guide (pair) | 2 | 
|
| Extruder body and idler | 1 | 
|
| Extruder gear set | 1 | 
|
| Extruder fan duct | 1 | 
|
| Printed Parts – Required | ||
| Z rear bracket | 2 | 
|
| Y end idler | 1 | 
|
| Y end motor | 1 | 
|
| Y belt holder | 1 | 
|
| Frame bracket | 4 | 
|
| Printed Parts – Recommended | ||
| RAMPS Electronics/Fan frame mount | 1 | 
|
| Filament spool support | 1 | 
|
| SMART display frame mount | 1 | 
|
All other parts
| Everything Else | ||
| NEMA17 Stepper motor | 5 | 48mm height, "high torque" |
| Hot End (J Head) | 1 | |
| MDF board (6mm thick) | 1 | 230mm by 230mm 
|
| MK2, MK2a, etc Heat bed | 1 | |
| Glass bed | 1 | 3mm borosilicate |
| Controller (Mega/RAMPS, Rambo, etc | 1 | |
| Endstop (limit) switch | 3 | |
| LM8UU Linear bearing | 11 | 12th may be used if you put four in the X carriage (your option) |
| 608ZZ roller bearing | 3 | Used for geared extruder only |
| 624 roller bearing | 3 | Used for Y and X idler ends and one more for the direct drive extruder |
| 5mm to 5mm shaft couplers | 2 | Can also use 3/16" ID vinyl tubing |
| 40mm x 40mm x 10mm fan | 1 | This mounts on the extruder fan duct |
| 80mm x 80mm fan | 1 | This mounts on the side of the RAMPS mount to keep it cool |
| Miniature zip ties | 20 | |
| Extruder idler springs | 2 | High tension is preferred |
| Bed leveling springs | 4 | Lower tension is ok |
| Z axis adjustment spring | 1 | this can be the same spring as either of the other types. |
| Power Supply | 1 | ATX supply with enough 12V amperage for your heat bed, or dedicated 12V supply 20A or more (30A recommended) |
| M8 Hobbed bolt | 1 | If you are using the geared extruder |
| MK7 drive gear | 1 | If you are using the direct drive extruder |
