Graham
Member
Registered: 12th Oct 03
Location: Lincoln.
User status: Offline
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its been 48 hours now and its still tacky slightly. so im guessin i canna sand it back yet 
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AdiSRI
Member
Registered: 1st May 02
Location: Berkshire
User status: Offline
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depends how much hardener you put in it.
Between 30 mins and 24 hours id say.
If it is tacky after 48 u didnt use anything like enuff hardner, or you didnt mix it properly.
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Graham
Member
Registered: 12th Oct 03
Location: Lincoln.
User status: Offline
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i used a fair bit of hardner, and mixed it up very well, ive jst started sanding down and its gone ok.
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JOPO
Member
Registered: 17th Jun 04
Location: ayrshire
User status: Offline
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if ye used too much hardener it wont harden right either lol is its really really pink then probly better off startin agen lol
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Graham
Member
Registered: 12th Oct 03
Location: Lincoln.
User status: Offline
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nah its not really pink, its kinda erm dunno how to describe it, but found out i got 800 wet/dry fine and not 600 wet-dry 
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JOPO
Member
Registered: 17th Jun 04
Location: ayrshire
User status: Offline
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dis it matter wit yev got if ye canny rub it yit loll
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Graham
Member
Registered: 12th Oct 03
Location: Lincoln.
User status: Offline
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quote:
Originally posted by JOPO
dis it matter wit yev got if ye canny rub it yit loll
didnt understand a word of that 
if your on about it doesnt matter what type of paper i use, techniquly your right, but if i use the right stuff then it saves hours in time and loads money too 
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Amavi Automotive
Member
Registered: 13th May 04
Location: Hampshire
User status: Offline
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P40 will remain slightly tacky for ever, as the resin part of the composite is polyester based, when It cures it will have a slight stick to it, unless it is mixed with a flow coat or wax soloution, as you do when laying up the last glass fibre laminate.
if its hard, and doesnt clog the paper too much when you sand it, its cured properly.
hope this helps.
Will
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Graham
Member
Registered: 12th Oct 03
Location: Lincoln.
User status: Offline
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thanks will, 600 grit wet/dry paper will shape it ok wont it, and remove the orange peel effect off the piece, then what type of filler primer would you recommend i use to go over this?
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Kris TD
Member
Registered: 25th Mar 02
Location: Ware, Hertfordshire
User status: Offline
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you will need to use something like 80 or 120 grit on fibreglass or you will be there forever, you only use 600 grit for finnishing filler.
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RichR
Premium Member
Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
User status: Offline
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the top layer is still tacky because it actually takes 6 weeks for all of the styrene to release from the resin - however it set to "touch harden after about 30 mins to a few hours
I wouldnt try sanding it - if u have to - uve used to much - skim with P40 to bridge whatever it is ur doing - then skim over that with a fine layer of p38 filler- and sand the filler flat
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