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Belts???

Posted by jimmyjim

jimmyjim

Belts???
February 24, 2017 03:03PM

Registered: 7 years ago
Posts: 15

I need to change my belts!

I bought some MXL belting off Ebay, but the pitch is 2.5mm not 2mm.

Any advice on belts??

Thank you

Jim

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dougal1957

Re: Belts???
February 25, 2017 01:03PM

Registered: 9 years ago
Posts: 1,159

You need GT2 Belts I believe

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droftarts

Re: Belts???
February 25, 2017 03:04PM

Registered: 12 years ago
Posts: 1,611

Belts and pulleys supplied with original RepRapPro kits (and I guess emaker ones) were MXL, which is an imperial size with a tooth pitch of 0.080", or 2.032mm. They are 1/4" wide, or 6.35mm. Belts for the Fisher were 2.7m long. See: [reprappro.com]
If your belt has a pitch of 2.5mm, it's probably metric T2.5 belt. Don't use GT2 belt with the MXL pulleys, it will throw out the steps per mm. Either get proper MXL belt, or replace pulleys and belt with GT2 versions.

Ian

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jimmyjim

Re: Belts???
February 25, 2017 03:15PM

Registered: 7 years ago
Posts: 15

Thank you,
I now realise my post was unclear!

My original belt is 2mm pitch, the one off ebay was 2.5 pitch.

I've yet to check how many teeth my pulleys are, (says 18 in the instructions).

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droftarts

Re: Belts???
February 25, 2017 04:11PM

Registered: 12 years ago
Posts: 1,611

GT2 2mm belt has a 2mm tooth pitch, but has a rounded tooth profile. MXL is very close to 2mm, at 2.032mm, but has a trapezoidal tooth profile. You shouldn't use the GT2 belt with the MXL pulley, and vice versa; you'll get backlash. If you got your Fisher from RepRapPro, get MXL belt. Get the ebay supplier to send you the right belt!

Ian

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jimmyjim

Re: Belts???
February 26, 2017 01:04AM

Registered: 7 years ago
Posts: 15

I've ordered from another supplier.

If I get no joy this time, I'll switch to GT2 belts and pulleys.

Thank you

Jim

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bluesign2k

Re: Belts???
February 26, 2017 04:01PM

Registered: 8 years ago
Posts: 68

If you want to go for GT2 then I can recommend ooznest.co.uk. If you do do that then don't forget to change your steps/mm in your configuration to 80 (if I remember correctly).

Edited 1 time(s). Last edit at 02/26/2017 04:03PM by bluesign2k.

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jimmyjim

Re: Belts???
February 26, 2017 11:54PM

Registered: 7 years ago
Posts: 15

Thank you for the advice.

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jimmyjim

Re: Belts???
March 13, 2017 02:54PM

Registered: 7 years ago
Posts: 15

My new belts have arrived!!
All layer shifting problems have gone away!
Ebay link for belts