I've bought some "ball chain" or "V Ribbed Belt" from the bounded Mitre 10 accouterments abundance for NZ$6.95 per metre. The assurance on it are 4.60mm in bore and accept 1.80mm apparent breadth confined amid them. I accept artificial beaded belt of the aforementioned dimensions, so this is acceptable to be some affectionate of standard. Investigations continue, do clue us in.

I've advised a caster (shown left) that can be bogus on a RepRap - and fabricated one. Afterwards a automatic test, Adrian ran 4 off on the Strat. Note: Accomplish one with a rim that lifts off in the approaching so I can fit the corruption belt afterwards resorting to violence.

Here is the video beneath assuming them in operation. Note that the orange caster beneath the bed in the lower larboard bend of the anatomy is alternating and that the old drive belt is not fitted. The red acting accompany is a cable tie and is acutely not traveling to go calmly about the corners. The alternation is fabricated from chromed brass, by the way.

To accompany the ends of the loop, I filed down the two absolute assurance on the alternation into about behindhand (measured with a badly-calibrated Mk I eyechrometer) while captivation them in medical clamps. Afresh I captivated the clamps in a brace of angled vices so that the behindhand adapted calm properly, assuredly soldering them calm with a PK Belt and awful baneful advance adhesive (yum). Bigger account welcomed! The abutting alternation is able-bodied abundant to about-face the accomplished Z arbor accumulation with some enthusiasm. If I body the next RepRap the apparatus will go in the accepted place.