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Apr 10, 2020 20:35:29 GMT
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Folks
Quick one i am fitting a new rear 1/4 to a mk1 golf and i was thinking of panel bonding around the arch instead of welding as this is where it usailly rots out.
I am after suggestions on what product I should I use to do this.
Thanks for looking and responding
Andrew
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Apr 10, 2020 22:10:57 GMT
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Panel bond is a specialist adhesive - 2 pack & specially formulated for the bonding of outer panel skins to vehicles - it should not be used on high stress areas such has sills / A posts / chassis legs - normally requires application via a specialist gun and with a specialist mixing nozzle - you normally get 1 or 2 nozzles with a 200ml adhesive pack but packs of additional nozzles can be purchased - one of the better known brands is 3M 8115 www.3m.co.uk/3M/en_GB/company-uk/3m-products/~/3M-Panel-Bonding-Adhesive/?N=5002385+8709313+8709338+8711017+8711413+3293241847&rt=rudIts a specialist product and its not cheap - can be found on some of the electronic media sales sites priced from circa £45 - the application gun is about another £45 There are other specialist manufactures of panel boding adhesives but you probably stand a better a chance of finding the 3M product on the open market Anyone who comes along and states that you will ok with a squirt of Tigerseal or similar genuinely understands very little about the use of panel bonding adhesives and the real disadvantages of using a non specified product for doing so By all means please post up any further questions that you may have on the subject matter - Chris |
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Apr 11, 2020 20:02:22 GMT
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Thanks Chris for responding, its the joint between the inner arch and the outer around the arch radius.
I though adhesive option would give a better seal than plug welding it then sealing it afterwards as it would remove welding from the area which is susceptible to corrosion. Not done a lot of this so excuse the questions...
I was after a slightly more cost effective solution as its will 120 quid before we start, but I agree tiger bond will not do the job.
What would you do plug weld and grind back and seal.
Thanks
Andrew
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Apr 11, 2020 20:20:46 GMT
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Thanks Chris for responding, its the joint between the inner arch and the outer around the arch radius. I though adhesive option would give a better seal than plug welding it then sealing it afterwards as it would remove welding from the area which is susceptible to corrosion. Not done a lot of this so excuse the questions... I was after a slightly more cost effective solution as its will 120 quid before we start, but I agree tiger bond will not do the job. What would you do plug weld and grind back and seal. Thanks Andrew Andrew - Normally yes - you how soon are planning on undertaking the work - I have some panels to bond on a project in the workshop and was hoping to try a more cost effective product that I have in mind - its a trade only product (Kent Europe) but if it works I don't mind sending a cartridge on to you - however I'm several weeks away from getting to that point - if you can hang on while - otherwise you are going to have to go back to your plug weld method - Chris |
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Apr 11, 2020 20:33:24 GMT
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I've fitted quarters in the past and used windscreen sealer on the arches, normally vw or vauxhall vehicles with no problems years later. About €20 a tube
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Apr 11, 2020 21:36:35 GMT
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The body adhesive is rigid so improves (the ford braded stuff I used smelt like epoxy) the rigidity of the car windscreen adhesive is flexible and doesent. You have to get the panels carefully preparred close fitting and it doesen't work very well in peel or in an accident it is good for evenly distributing stress and avoiding local cracks, virtually all oem's use it in conjunction with some sort of mechanical connection (weld or rivet)
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Apr 11, 2020 22:00:44 GMT
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The body adhesive is rigid so improves (the ford braded stuff I used smelt like epoxy) the rigidity of the car windscreen adhesive is flexible and doesent. You have to get the panels carefully preparred close fitting and it doesen't work very well in peel or in an accident it is good for evenly distributing stress and avoiding local cracks, virtually all oem's use it in conjunction with some sort of mechanical connection (weld or rivet) Kevin - Yep they are all at it - the latest generation of the panel bond adhesives now have minute glass beads within them - this is to get a more even distribution of the adhesive and to prevent the adhesive being over thinned when the panels are clamped up and has stated most of the new panel adhesives you can spot weld through - The vast majority of it done by robotic arms there is next to no comparison between a new car production line and one of the 1970's with exception of the fact that a car still rolls end of the line |
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Apr 12, 2020 10:44:24 GMT
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I've worked in the motor industry for 35 years now, I remember back then the body plants were dirty places with sparks fling everywhere, manual spot welders, men everywhere and a great deal of grinding manual adjustmeng etc, nowadays in Europe if vast halls of robots and hardly any people, lower cost countries still use a lot of manual labour though. The adhesives used in production are different to the ones used in service, if you are going to build a complete car in 24 hours or less they have to cure very quickly, they usually cure by heat in the paint ovens and in many cases are applied as a tape which is then welded through.
Theres also structural foam being used which is placed inside cavities during assembly then swells up to fill and stiffen the area in the ovens.
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