| [ Total Views: 679 | Total Replies: 7 | Thread Id: 50570 ] |
|
|
 Kimbo
Officially Full-On Dubber
Posts: 207
Threads: 30
Registered: January 24th, 2005
Member Is Offline
Location: Adelaide
Theme: UltimaBB Pro Blue ( Default )
Mood: Is it beer O'Clock yet ?
|
| posted on April 4th, 2006 at 12:49 PM |
|
|
What primer to use over f/glass and aluminium
Dumb question, and probably already answered somewhere but I'll ask... my buggy's got a combination of old crusty painted fibreglass and previously
unpainted aluminium panels - given that it'll all be topcoated with enamel (of some form), can the same primer be used over both base materials ?,
and what type of primer would you suggest to use ?
|
|
|
 helbus
A.k.a.: Pete S
Super Administrator
Mad fabricator, paint and body
Posts: 7386
Threads: 312
Registered: September 1st, 2002
Member Is Offline
Location: In the garage chopping cars into bits
Theme: UltimaBB Pro Blue
Mood: In the thinking chair
|
| posted on April 4th, 2006 at 01:29 PM |
|
|
You best bet is to speak to your paint supplier as there are many different answers based on final finish required, cost, surface condition, brand of
top paint, type of top paint etc.
|
|
|
lohoon
Wolfsburg Wizard
Posts: 466
Threads: 67
Registered: September 5th, 2002
Member Is Offline
Location: muswellbrook
Theme: UltimaBB Pro Yellow
|
| posted on April 4th, 2006 at 03:16 PM |
|
|
Firstly you'll have to getrid of any flaking paint by giving it a good sanding.Then depending on the paint you'll be using start with a etch primer
that suits the paint system.Then primer, rub smooth then shoot topcoat.
|
|
|
Kimbo
Officially Full-On Dubber
Posts: 207
Threads: 30
Registered: January 24th, 2005
Member Is Offline
Location: Adelaide
Theme: UltimaBB Pro Blue ( Default )
Mood: Is it beer O'Clock yet ?
|
| posted on April 5th, 2006 at 10:35 AM |
|
|
Thanks guys - I'd read somewhere that aluminium needed a different type of primer to fibreglass, which is what I was more interested in, rather than
the prep of the surfaces. However, if you reckon etch primer's OK for both materials, then I've not got a problem, as I've got loads of that
sitting around in the garage.
Cheers ... Kimbo
|
|
|
helbus
A.k.a.: Pete S
Super Administrator
Mad fabricator, paint and body
Posts: 7386
Threads: 312
Registered: September 1st, 2002
Member Is Offline
Location: In the garage chopping cars into bits
Theme: UltimaBB Pro Blue
Mood: In the thinking chair
|
| posted on April 5th, 2006 at 11:00 AM |
|
|
Check that the etch primer you have is suitable for aluminium. You have to check it or you may end up with all your paint off.
If in doubt speak to the supplier of the brand of etch primer you have. They will have the technical info. Alternativley do a Google search for the
manufacturer/ brand and see if they have specs on their website.
|
|
|
Kimbo
Officially Full-On Dubber
Posts: 207
Threads: 30
Registered: January 24th, 2005
Member Is Offline
Location: Adelaide
Theme: UltimaBB Pro Blue ( Default )
Mood: Is it beer O'Clock yet ?
|
| posted on April 5th, 2006 at 01:13 PM |
|
|
Ah - see what you mean. No probs - I'll check it out. Thanks
|
|
|
shaihulud
Custom Title Time!
Posts: 1448
Threads: 197
Registered: November 4th, 2005
Member Is Offline
Location: Perth
Theme: UltimaBB Pro Blue ( Default )
|
| posted on April 9th, 2006 at 01:13 AM |
|
|
DO NOT!!!! DO NOT!!! STRESS AND REPEAT. DO NOT!!! use an etch primer on fibreglass. It will ruin it. Use a good quality primer that does not etch.
I have recently done some painting of fibreglass panels that I want to be satin black. I used a product called Motospray Bumper Prime. Over the top I
used Motospray Bumper Black. It can be sprayed, brushed or rolled on. You need to thin it with acrylic thinners (about 1/3rd) which will evaporate
away quickly while you paint. It sets hard but it has a flex agent in it. Plastics sometimes have oils in them and ordinary primers won't stick to
them. Bumper Prime will stick to oily plastics. Make sure that you get the original fibreglass surface very clean as fibreglass (not gellcoat) has an
oily surface.
|
|
|
Kimbo
Officially Full-On Dubber
Posts: 207
Threads: 30
Registered: January 24th, 2005
Member Is Offline
Location: Adelaide
Theme: UltimaBB Pro Blue ( Default )
Mood: Is it beer O'Clock yet ?
|
| posted on April 11th, 2006 at 10:19 AM |
|
|
Thanks Shai - sort of thought that might be the case with etch primer, but didn't know for sure. Thanks for the tip with the other bumper primer -
looks like I need to check the tech sheets on the paint before I go any further.
Cheers .. Kimbo
|
|
|
