Haydn’s MagBalls and MagBallArms for Delta/Kossel 3D Printers
| Description | Price | US First Class postage |
International First Class postage |
|---|---|---|---|
| High-precision MagBalls | 12 for $18 or $1.50 each |
$5 | $14 |
| CNC’d Delrin rod ends | 12 for $15 | $5 | $14 |
| N52 NdFeB magnets (each one tested) | 12 for $24 or $2 each |
$5 | $24 |
| 215mm set of arms: Mini-Kossel | $85 | $5 | $24 |
| 288mm set of arms: Kossel w/<250mm bed | $85 | $5 | $24 |
| 304mm set of arms: Kossel w/250mm bed | $85 | $5 | $24 |
| 360mm set of arms: Kossel w/300mm bed | $90 | $5 | $24 |
| Custom length set of arms up to 600mm | $115 | $5-$15 | varies |
| Add 10mm CF tubing instead of 5.8mm | additional $60 |
Contact haydn.huntley@gmail.com for MagBalls, magnets, and extremely carefully assembled, precisely measured carbon fiber arms.
I test and measure each set of arms. The magnets in the joints have a tested holding strength on a MagBall of at least 1.5kg. The arms in a set match lengths within 50µ, according to my calipers, and typically they match within 30µ.
All sets of arms include MagBalls, N52 magnets and CNC’d Delrin ends.
Lubricant: I use bicycle chain lube. Stays in place, sheds dirt. My favorite is White Lightning Easy Lube
Here are typical measurements for the new high-precision MagBalls:
These new ball studs are about 10x as precise as the previous ones I was able to have made.
I don’t recommend the practice of unattended printing with any 3D printer, though that’s the way I usually print.
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