More learning curve working with Carbon Fibre (MFCSSB!!)
03-01-2008, 04:27 PM
#1
AudiWorld Super User
Thread Starter
More learning curve working with Carbon Fibre (MFCSSB!!)
After sucessfully doing a CF overlay on a burl HVAC surround, I started doing an overlay on an actual 93 S4 black plastic surround. Prepped it like the burl one, i.e. sanded with 120 grit to roughen up, removed dust etc. Documented the whole process with photos. Get down to the third and final resin coat today and...
Leave the house with the coat looking absolutely gorgeous and everything flat. Go out with my wife for the afternoon, come back, check it and....
WTF??? The overlay curled and pulled away from the surround (obviously resin doesn't bond to plastic as well as it does to the covering on the burl).
Maddening because otherwise the resin in the final coat is perfect.
Must have been a heat issue.
Really have to invest in the vacuum bag materials etc.
I am going to try to salvage this one with epoxy between the CF and the plastic (and a brick to hold it flat). Might as well try. Nothing to lose.
M_e_r_d_e
Leave the house with the coat looking absolutely gorgeous and everything flat. Go out with my wife for the afternoon, come back, check it and....
WTF??? The overlay curled and pulled away from the surround (obviously resin doesn't bond to plastic as well as it does to the covering on the burl).
Maddening because otherwise the resin in the final coat is perfect.
Must have been a heat issue.
Really have to invest in the vacuum bag materials etc.
I am going to try to salvage this one with epoxy between the CF and the plastic (and a brick to hold it flat). Might as well try. Nothing to lose.
M_e_r_d_e
03-01-2008, 05:01 PM
#2
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Got a little project going myself.
<center><img src="http://pictureposter.audiworld.com/107717/bulkhead_going_back_in.jpg"></center><p>I use 80grit to prep surfaces, gives a little more surface key. You might see if there is a solvent or primer that you can use to surface prep the plastic.
03-01-2008, 05:52 PM
#5
AudiWorld Super User
Thread Starter
I know. Trying the epoxy "trick" right now. Using 6 wine bottles (full) and clamps to hold it flat.
Not very confident but the alternative is starting over again. Not ready to do that yet.
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03-01-2008, 06:31 PM
#8
AudiWorld Super User
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Did this one before, no mould. Must have been heavier on the first coat.
<center><img src="http://pictureposter.audiworld.com/15624/cfhvacsurround1.jpg"></center><p>
