The plastic dash on my car had a number of cracks. I took it to a guy who does "plastic welding" Picked it up yesterday and so far I am very pleased with what he has done. Still requires a little sanding and paint, but sure beats me trying to glue it back together. Might work for others here.
Never saw this procedure done, is this a plastic filler rod that fuses the two sides together again?
Ray, that is the way it was explained to me. I never watched him do it. He identifies the kind of plastic to be repaired and away he goes. He charged me $60. and I was pleased with that. ALL Maverick dashes are cracked.
He tells me he does a lot of snowmobile hoods, as well as heavy truck dash and interior parts.
He must be using some sort of raw plastic material, as plastic changes it's molecular structure once molded, so re-using an old peice generally wont work.
Sounds like a potentially really messy and toxic job, but a great idea
I was trained to do plasstic welding in college as part of my aprenticeship. I like using epoxy for all my plastic repairs. I have even done steering wheels.
He must be using some sort of raw plastic material, as plastic changes it's molecular structure once molded, so re-using an old peice generally wont work.
Sounds like a potentially really messy and toxic job, but a great idea
That's not entirely correct. Thermoset plastics can be remelted over and over, therefore can be welded using a scrap piece of similar plastic. Plastics that undergo a chemical reaction when molded cannot.
I've recently learned that arc welding that sucker is the only way to trust it. All other forms of welding are inferior except TIG, but it's expensive.
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I have a Liester plastic welder. It uses concentrated hot air that is heated up to 900 degrees I think. It has cast stainless tips. One is a tacking jet and the others are for 1/8" and 3/16" rod. I have welded lots of low and medium poly and recently experimenting with ABS welding.
That's not entirely correct. Thermoset plastics can be remelted over and over, therefore can be welded using a scrap piece of similar plastic. Plastics that undergo a chemical reaction when molded cannot.
Maybe I'm confused But I have always thought thermoset was injected or set into a hot die cold and the heat of the die starts the chemical reaction that once done is done most of these contain fiberglass and some other nasty stuff . Most resemble a thick putty or caulking in the raw state .Any recyclable plastic I have ever seen has been injected/ blown or otherwise hot into a cold die . pellets of hard plastic feed into a heat chamber that melts it first before forming a product not sure of the term but its not thermoset
Maybe I'm confused But I have always thought thermoset was injected or set into a hot die cold and the heat of the die starts the chemical reaction that once done is done most of these contain fiberglass and some other nasty stuff .
My bad !! I meant thermoplastic, but you knew what I meant. Bakelite is a type of thermoset plastic.
I started this post with the sole idea of sharing information with other members about doing plastic welding to fix broken plastic interior pieces. This was a new find for me, but maybe most already knew about it. We now have gone from someone who welds fiberglass, windshields and toilet paper to the complete chemical breakdown of all plastics. Sorry guys. I am not interested. I just wanted to get my broken dash fixed and maybe help you get yours repaired.
Thanks for sharing Will. There's many applications for this process, that could save people a lot of many. Broken dashes is a great example, plastic grills from the '70's muscle cars are very pricey to replace. The "Sharktooth" on a '71 340 Duster is a good example, you'd be hard pressed to find a good used one for under $1,200., and that's not a mint or NOS one.
Floor consoles...
Like Grumps said, the main subject matter has been viewed by many, and well received. Threads will get side tracked in these forums, and a bit more info is always interesting to read also. (I'm a bit of an inquisitive type, and always like to find out more).
And a bit of humor to top it off is all good.
-- Edited by Gazoo on Thursday 24th of October 2013 05:08:34 PM
I started this post with the sole idea of sharing information with other members about doing plastic welding to fix broken plastic interior pieces. This was a new find for me, but maybe most already knew about it.
We now have gone from someone who welds fiberglass, windshields and toilet paper to the complete chemical breakdown of all plastics.
Sorry guys. I am not interested. I just wanted to get my broken dash fixed and maybe help you get yours repaired.
I started this post with the sole idea of sharing information with other members about doing plastic welding to fix broken plastic interior pieces. This was a new find for me, but maybe most already knew about it. We now have gone from someone who welds fiberglass, windshields and toilet paper to the complete chemical breakdown of all plastics. Sorry guys. I am not interested. I just wanted to get my broken dash fixed and maybe help you get yours repaired.
It's a good post will
Thanks for starting it.
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slab----67 chevy II 2dr post and 66 chevy II hardtop
What I like is how much I learn about grammar, spelling and commroderie..I had no idea you could weld with toilet paper..I have been having trouble with that..glad Will posted this thread now I ..Will.. now know to turn the heat down to prevent "Will-nots...