Welding plastic

   / Welding plastic #31  
Recently I have developed a need to weld a broken fender on my tractor. I did a search and ran across some old threads on this. I'll make a guess and think that most likely the technology to even do that has changed a bit since those were posted. Does anyone on here have any experience with a commercially available kit? My SIL collected most of the pieces after backing the tractor into the wall while cleaning out the shed but judging by the pieces in hand, I am thinking he didn't get them all. Any recommendations for filler material to use?
What tractor? You show 3. I think 'yomax4' is most likely correct that the fender is made of HDPE. A good reference to id what kind of plastic for me is Identify Plastics.
Another video from them about fiing Ag plastics is John Deere Hood Repair - 5213 Agricultural Repair Kit
 
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   / Welding plastic
  • Thread Starter
#32  
What tractor? You show 3. I think 'yomax4' is most likely correct that the fender is made of HDPE. A good reference to id what kind of plastic for me is Identify Plastics.
Another video from them about fiing Ag plastics is John Deere Hood Repair - 5213 Agricultural Repair Kit
This is on a Cub Cadet/Yanmar from 2010 I think. I will look at the links you sent there. I appreciate the help. The few bodyshops I contacted didn't really want anything to do with it. I used to do bodywork on aircraft so I am looking for a solution that I can do.
 
   / Welding plastic #33  
This is on a Cub Cadet/Yanmar from 2010 I think. I will look at the links you sent there. I appreciate the help. The few bodyshops I contacted didn't really want anything to do with it. I used to do bodywork on aircraft so I am looking for a solution that I can do.
Like Scooter said the welding isn't hard, making it LOOK good that's what is hard.
For howto see the their utube videos.
I don’t have the kit with hot air, so I use the tip that feeds the rod through the tip melting it and feeding it into the groove you make in the part. A problem is preheating the part until it’s just about ready to melt and then feed the rod into the groove and then melting the two together so they’re one, smoothing with the tip. Do NOT set the heat too high so you can get done faster. That way leads to bubbles in the repair, making it much weaker.
Then I come back with the round tip and holding it just barely above the weld to heat the join until it flows out. Much easier said than done. Practice, practice, practice. Like anything else the more you do the better looking the results.
 
   / Welding plastic #34  
I bought a hot stapler kit for around $20 and have used it to fix bumper covers, fenders, wheelbarrows, and an ice fishing sled. None of the repairs has failed. A few friends that have body shops now use them to repair headlight housings, was actually recommended to me by one of them. Car bumpers used to be ABS, now most are ASA.
 
   / Welding plastic #35  
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This is me fixking my cracked cab over winter after it cracked in -40F. Using plastic welding staples.
 
   / Welding plastic #36  
I do a similar repair using paper clips. I cut and bend them into the shape I want and then push them into the plastic with a soldering iron. The paper clips with score marks on them work better.
 
   / Welding plastic
  • Thread Starter
#37  
Update, I did manage to finds some 1' X 1' sheets of yellow plastic patch material. I am still away but hope to give it a go when I get home. The color is close and the thickness is the same. It'll either be "welded" in or I'll find some good adhesive that will etch into the plastic.
 

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