Nezz10

With correct spelling on title this time!

I am building up some glass fibre parts, speaker installs being one of them.

I have got the main shape sorted with the matting and resin, have also put on the easysand filler on the top and am currently sanding it all down to make it smooth.

The problem I have is that there seems to be lots of little micro holes in certain areas, I could keep sanding to get down but this will mean taking off a lot of filler and I seem to get more occuring as I sand more?

I have tried filling the holes then sanding back down but as I said above I always seem to find more. I have tried giving it a coat of white primer to see if it will fill the holes but becuase the paint is so thin it didnt really help.

It has been suggested that I try a spray filler but not sure what I should be buying. Is there a gel kinda spray that I should be using to gently fill all of the holes?

Neil.

Nezz10

No one?

2000 sport

iTrader: (1)

sand down with wet 1200, then use some high build primer such as high 5 if you still have problems..

TopBanana

Did you apply heat when it was drying? This can cause gas bubbles to form in the resin.

Christ

You would normally rub down the fibreglass to the required profile before using
the filler, this filler then fills in any air-bubbles in the fibreglass... I think your
best method now is to rub the whole lot down to just under the profile you require
will something coarse (i.e. 80 grit) before re-applying the filler, rub this down with
80 grit (carefully) then remove scratches with 240 grit. Depending on what your
doing next you may want to then use a filler-primer.

Chris

(You will nearly always have some bubbles in the fibre-glass)

PaulC555

Fill the holes with 3M red putty, and then remove gently with at least a P320 grade.......should do the job....

BOB.T

We used to use 'Stopper', it was a fine filler, I guess that's what 3M red putty is? Spray filler would do the job and I'd also recommend some high build primer, all of which should be available from a good motor factors or even Halfrauds