Hardened Steel Hobbed Drive Roller?

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Curt
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Hardened Steel Hobbed Drive Roller?

Postby Curt » Thu May 25, 2017 11:46 am

Hi all! I have fallen in love with carbon and fiberglass petg from 3dxtech but have noticed the hobbed drive roller on my EZstruder is toast after just a single roll of fiberglass petg! :shock: It now slips even on normal petg forcing me to slow down to under 40mm/s. I replaced my nozzle with a hardened steel one but was not expecting the drive roller on the extruder to need replacing too. Does anyone know of a hardened replacement for the hobbed drive roller? Or an alternate extruder that has one available? I have 2 deltas with this issue (a max V2 at home and a heavily modified Boots V2.5 at work) and need a solution or will have to stop using these fancy filaments. :( Thanks!

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mhackney
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Re: Hardened Steel Hobbed Drive Roller?

Postby mhackney » Thu May 25, 2017 12:57 pm

I've run 20+ spools of CF (not fiberglass) PETG and PLA with no issues on the Bondtech QR extruder. It's - push on both sides of the filament - design is much better for flexibles and abrasive filaments like these.

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Jimustanguitar
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Re: Hardened Steel Hobbed Drive Roller?

Postby Jimustanguitar » Fri May 26, 2017 1:12 am

Is the drive roller worn down, or do you just have plastic dust "clogging" the teeth? Clear out the swarf and have a close look at it to be sure.

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mhackney
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Re: Hardened Steel Hobbed Drive Roller?

Postby mhackney » Fri May 26, 2017 9:25 am

+1 on Jim's recommendation. Super critical for any "hard" filament.

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Curt
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Re: Hardened Steel Hobbed Drive Roller?

Postby Curt » Thu Nov 02, 2017 11:03 pm

In case anyone else stumbles on this later: The printer at work (CarbonX only) continued working fine for another 2.5 kg then it's hobbed gear also wore out and had to be replaced. The one at home with the ezstruder was really stripped after one roll of fiberglass petg though. I had already cleaned it, even picking out some filament between the teeth and it was obviously worn.I ended up replacing the hobbed roller with the stock seemecnc one and not printing the fancy filaments at home since they are expensive and to be honest, unnecessary for pretty much anything I print. I've stuck to my normal natural esun 25$/kg petg with zero issues.

If I ever have a need to print with those filaments again I will upgrade the extruder as Mhackney suggested.

Thanks (belatedly) for your help guys!


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