Step 15Sanding and Finishing
Filled all the holes with P38 Isopon (car filler). If you are in the States Bondo is a good alternative.
Sanded progressively with 80 grit, 120 grit and 180 grit paying special attention to the MDF 'end grain'.
Used sanding sealer on all the MDF 'end grain'. You should put it on heavy and let it soak in a while. I think I did two coats.
Then I took it to the college spray shop and got it sprayed. 2 base coats and 2 top coats. Cutting back with 320 grit silicone carbide paper in between coats. Then I gave it a quick polish with a cloth by hand.
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