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Abrasive Papers
Available as sheets, disks, strips, rolls and pads.
Lowest numbers are coarsest, e.g. 40grit (Coarse) 1200 grit (Very Fine)
For shaping fillers etc. use 40 to 80 grit Production Paper. Similar to sandpaper but stronger and available in a wider range of grits. Always used dry. Finer grades available for smoother finishing.
WetorDry type papers available in all grades from coarse (80) to ultra-fine (1500). Always used wet which extends its' working life and helps prevent clogging.
Abrasive Pads
Graded nylon abrasive materials similar in appearance to household scouring pads. Available in grades from very course up to ultra-fine, and used for wet or dry sanding of difficult areas and also panel preparation for blending metallic paints. Not really intended for heavy sanding or material removal, designed to be more suited to general sanding to promote adhesion.
Air Drying Paints
Includes paints, primers and fine fillers (stopper), all still in use by trade and d.i.y. alike, but becoming less common for professional trade use.
All types dry solely by evaporation of solvent. Usually quick drying and easy to use, but prone to later sinkage, loss of gloss and colour, can attack previous paint layers. The most well known are cellulose products, still widely available in most colours. Some air dry paints and most `Basecoat' clear lacquers are actually acrylic based, with similar use and drying properties but better colour retention and polishing. Overcoating acrylic lacquers can present problems with crazing and cracking of the paint surface, especially if subsequent coats are applied heavily.
Regardless of which air-drying material is used, care must be taken to allow each coat to dry before applying more to avoid solvent being trapped beneath dry top layers, leading to later problems with sinkage and blistering of the paint.
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