Custom parts made exclusively for your model
MackBricks offers custom part design and manufacturing for your models. You can create custom wheels using Wheel Builder, or get in touch to commission custom parts. Services include resin printing, FDM plastic printing, and UV ink printing directly to bricks or for decals.
#2 to #13 · half sizes · from $8.50 a pair, plus shipping
Our Specialties:
Custom wheels
Carrying and driving wheels in every half size. Design them yourself in the browser, get live pricing, and order in the same sitting.
Open Wheel BuilderSide and connecting rods
Designed, printed, and tested, all for your own locomotive!
Ask about rodsUV ink printing
Printed directly onto bricks, or supplied as decals. Lettering, numbering, panel lining, etc.
Ask about printingCustom track
One-off track geometry by commission: narrow gauge, custom radius curves, switches, ballast plates, and more.
Ask about track
MB-0000-6DB6-V0NJ — one of the millions of possible wheels you can create.
Design your wheels and order them in minutes.
Each detail is yours
Size, spoke count, counterweight reach, crankpin position, traction groove, blind or flanged. All geometry is built from your inputs each time you move a control.
The quote is instant
Pricing recalculates on the 3d model you are looking at, from its real printed volume and how many fit on a plate. This eliminates any wait time previously associated with obtaining a quote.
No design fee
No longer do you have to pay for design time. Wheels are generated, so a one-off costs the same per wheel as a repeat — the only thing that moves the price is the volume of resin and the quantity printed.
Every wheel keeps its code
Each design packs into an easy code, like MB-36EB-P3CJ-V8XX. Keep it, post it, or give it to someone else — when entered back in, it generates the identical wheel.
Here’s how you can create with Wheel Builder:
| Metal-axle wheels | #2 — #10 | 17 sizes, every half step |
|---|---|---|
| Cross-axle wheels | #2 — #10 | 17 sizes, every half step |
| Spoked drivers | #6 — #13 | 15 sizes, every half step |
| Boxpok drivers | #7 — #13 | 13 sizes; below #7 there is no web to cut |
| Spokes | 3 and up | capped where the rim runs out |
| Boxpok holes | teardrop or circle | full depth, or stepped to a small bore |
| Counterweight | 16 steps | reach and arc, on drivers |
| Options | groove · blind · crankpin | per wheel, not per order |
| Pack sizes | 2 · 4 · 8 · 12 · 24 | a pair is the minimum |
| Material | resin | printed in-house, not outsourced |
| Price | from $8.50 a pair | plus shipping, shown before you pay |
| Design code | MB-XXXX-XXXX-XXXX | rebuilds the wheel exactly |
What can we build for you?
Rods, UV printing, and custom track are quoted by hand, so the more you can tell us about your project, the faster we can respond with a quote!


