So recently I was working on a project and had a belt break. Although it destroyed the project, it gave me an opportunity to reach out to look for some upgrades. Thanks to the good folks here for all their help!
Although I have heard of people going with a 9 mm belt upgrade, that just was not enough for me. I went for a 10 mm belt. Boy was I happy I did. I purchased the belts and pulley from Amazon. These fit the SO3 perfectly. It was plug and play!** No other modifications needed. I replaced both x & y belts with these 10 mm belts. I have heard that it will not fit the Z axis. I have not had the opportunity to try the Z, but will in the near future. I will report my findings here when I do.
Overall This was a great cheap upgrade. Cuts are cleaner, and over all the machine is stronger. Belts last longer and less belt stretch over time. I highly recommend this upgrade to all SO3 owners. I would encourage Carbide3D to make this a standard for any new SO3 purchasers. Hope this helps, Keep on cutting yo!
Is there any specific improvement gained from fattening these belts? I mean, sure, bigger seems better, but is there any measurable increase in any specific parameter like tension consistency, lifespan, or anything?
TL;DR for this page: The GT2 belts that come with the machine are very accurate if properly tensioned and the only other belts you should consider to handle more force are either the same 2M GT2 in wider width (+55% modulus @9mm wide) or 3M GT2 for maximum stiffness at the expense of precision (+325% modulus @15mm wide, 4X-5X backlash).
So, to restate: A belt upgrade might increase the maximum stiffness, which is not particularly necessary, at the expense of increased backlash?
Is there any specific indicator that someone might need the machine to handle more force? Just wondering, especially since the post title notes this is “must have,” thanks
Just a quick warning / PSA from Carbide- we don’t recommend tensioning the 9mm any more than you would tension the 6mm. Even the 6mm can withstand more than enough force to bend a motor shaft. Don’t ask how we know that…