Heaven help me - I've just bought a delta kit :-)

[curious aardvark]

Well damn that works :-)

wheelsetup_640x480.jpg

Self taps right down to the base of the column, locks the wheel in place, super tight :-)
Going to try a 4 way now :-)

And that's all you need. Correctly spaced wheel holders and a 3x16mm bolt.
No washers, eccentric nuts, spacers - it ain't necessary :-)
Made the holes 3.25mm - gives a perfect fit for a 3mm bolt. Really tight, but with room for the thread to cut without breaking the plastic. I'm quite pleased with myself :-)

You get a hard plastic shell with a solid metal core and 7mm solid column for the first couple of mm to the base plate. That's strong.

If you ever need to remove the carriage, just remove the bolts from one side and pop the wheels off. Shafts will be attached magnetically, so just pop off.

Right walk dogs while the 4 way prints.