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Repair a Broken Plastic Gear


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#1 LilysDad OFFLINE  

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Posted June 08, 2017 - 04:35 PM

I found this on Pinterest. I haven't tried it to know if it really works.

 

http://www.instructa...en-Gear-Repair/


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#2 MiCarl OFFLINE  

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Posted June 08, 2017 - 06:09 PM

Be interesting to know how it holds up.



#3 LilysDad OFFLINE  

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Posted June 08, 2017 - 06:19 PM

I think the plastic metal would hold up . . . if it stays stuck to the plastic.



#4 Merle013 OFFLINE  

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Posted June 08, 2017 - 06:51 PM

I will let you know if it works. I have a mig welder with a stripped gear. The gear is almost identical to the one he fixed. The po bought it new and stripped the gear the first time he used it. He was trying to use the wrong guide for the wire he was using. Wish me luck. :dancingbanana:


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#5 MiCarl OFFLINE  

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Posted June 08, 2017 - 07:46 PM

I think the plastic metal would hold up . . . if it stays stuck to the plastic.

Agreed.  The epoxy will be tougher than the original gear.  Question is if it stays attached.



#6 Merle013 OFFLINE  

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Posted June 11, 2017 - 12:58 AM

I thought I had it fixed. Everything looked good. Put the gear in the box and attached the gear it turns and worked good. put the rest of the gears in the box and closed it up. After about three turns it locked up. Opened the box and the epoxy fell out on the floor. I sure hate to pay $70 for a replacement wire feeder due to what should be a .50 cent gear. I can't find a replacement nor a company to make me one. Found two companies that advertise no gear to big or too small and neither one has answered my e-mails. Wish I could find someone to make me a good metal set of gears. There is four of them total. :poke:


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#7 KennyP OFFLINE  

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Posted June 11, 2017 - 05:25 AM

I glued some plastic together using the E6000 glue. I need to see how well it did today and report here!

Merle, is your gear plastic or nylon? What brand wire feeder?


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#8 LilysDad OFFLINE  

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Posted June 11, 2017 - 06:35 AM

I thought I had it fixed. Everything looked good. Put the gear in the box and attached the gear it turns and worked good. put the rest of the gears in the box and closed it up. After about three turns it locked up. Opened the box and the epoxy fell out on the floor

Mythbusters ain't got nuthin' on you. Busted!

 

PS Doesn't the feeder have a parts list? What is the model #?


Edited by LilysDad, June 11, 2017 - 07:21 AM.


#9 Merle013 OFFLINE  

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Posted June 11, 2017 - 09:07 AM

The gears are nylon (I believe?). The welder is a Pro Series MIG140 by Buffalo Tools. The PO had no paper work what so ever. I have not been able to find a manual of any kind for it. Welder was cheap and I did not think a set of gears would be so hard to find. I found a wire feeder online that is close enough to make it work for $70. I attached pics of the gears and the welder.

Attached Thumbnails

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  • P1320453.JPG

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#10 Merle013 OFFLINE  

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Posted June 11, 2017 - 09:33 AM

I just found Buffalo's website. No manual for a MIG 140 but they do have one for a 125. The wire feeder looks to be the same. I sent them an e-mail requesting information on parts and service.


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#11 LilysDad OFFLINE  

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Posted June 11, 2017 - 11:33 AM

Before you wreck your next gear, how about making a casting mold? :thumbs: 


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#12 29 Chev OFFLINE  

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Posted June 12, 2017 - 10:14 AM

I just found Buffalo's website. No manual for a MIG 140 but they do have one for a 125. The wire feeder looks to be the same. I sent them an e-mail requesting information on parts and service.

Here is a link to the manual for the MIG140 - they call it Assembly Instructions - http://buffalotools....ig140manual.pdf - hope this helps.


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#13 Merle013 OFFLINE  

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Posted June 12, 2017 - 10:25 AM

Thanks everyone. I looked online about three months ago when I got the welder and could not find anything. I looked the other night and found Buffalos webpage. They do not sell merchandise directly to the public, but I e-mailed them anyway. I got a reply and they are going to see if they have one in stock and let me know. 


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#14 Merle013 OFFLINE  

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Posted June 12, 2017 - 10:31 AM

LilysDad,

 

Good point. I put a lot of work into sanding and filing to get everything right.  :wallbanging:



#15 Oldford OFFLINE  

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Posted June 15, 2017 - 05:06 AM

Are these the gears that feed the wire through the liner?  didn't realize they were plastic.

 

i've only ever bought old american mig welders, never stripped any gears.  best one which i still have is a us-made century from around 1990.  it is only rated 90 amps but it out-welds any other 110 machine i have tried.  cost me 100 buck on craigslist, thought it was a good deal.

 

the only thing that breaks on my old welders is the spring tensioner on the little spool holders.  miller, lincoln, now the century, they have all been broken but on the century at least it doesn't seem to affect the feed.


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