Wheels
Pros
- Inexpensive to initially purchase
- Inexpensive to replace/repair
Cons
- If not properly adjusted, can add to slop in motion
- wheels with knicks/dents can add to inaccuracy or poor motion
Linear Rails
Pros
- Very smooth operation
- Low parts count
- Easy assembly
- Adds ro rigidity of machine
- Very accurate
Cons
- Can be expensive to initially purchase
- Can be expensive to replace/repair
- Can be heavy depending on the size of the delta, but this doesn’t negatively effect performance