If you own one surfacer, own this one. Mr. Hobby call it the most versatile, standard surfacer they make, and that's the honest positioning — 1000 is the grade that does the everyday work. Fine enough to leave panel lines, rivets and engraved detail intact, coarse enough to genuinely fill sanding scratches and faint seam lines rather than just tinting over them. It's the base coat most builds actually want, on most subjects, most of the time.

The dark grey isn't incidental either. Grey is the colour that tells you the truth about your own work: under raking light it throws every surviving seam, sink mark and scratch into relief while there's still time to do something about them. Prime in white and those flaws stay hidden until they reappear, permanently, under your top coat. This is the 170ml economy can — the same surfacer as the standard 100ml spray, with 70% more in it.

• The standard 1000 grade — fills properly without burying detail
• Dark grey shows up scratches, seams and sink marks before you paint
• Neutral ground for even colour across mixed plastic, putty and repairs
• Sands and polishes back to a genuinely smooth surface
• 170ml economy can — 70% more than the standard 100ml spray

Tip: Mr. Hobby's own recommendation is to let it dry fully, then polish it back with a rubbing cloth or wet-and-dry paper before colour. It's an easy step to skip and it's the one that separates a good finish from a flat one — you're not sanding to remove the surfacer, just to knock the surface truly flat.

Understanding the numbers: Mr. Surfacer's grade is its coarseness. 500 is the heavy filler for gouges and bad seams. 1000 is the standard working grade — this can. 1200 is finer, for a smoother base under gloss and metallics. 1500 is the finishing grade where any texture would show. Lower number, more filling; higher number, smoother surface.

Which one do I need? Start here — 1000 grey is the default for almost everything. Step up to 1200 (B-515) when you want a smoother base under gloss or metallic paint. Use White Surfacer 1000 (B-511) when the plastic is dark or the top coat is bright. Use Base White (B-518) when covering dark plastic is the problem rather than filling it. And if paint adhesion is the issue — resin, photo-etch, bare metal — put Mr. Primer (B-512) down first.

Specifications

Brand: Mr. Hobby (GSI Creos / Gunze Sangyo)
Item No.: B-519
Type: Lacquer surfacer — filling primer, aerosol
Colour: Dark Grey
Grade: 1000
Volume: 170ml (economy size)
Suitable for: Styrene, ABS, resin, putty and filled areas
Sandable: Yes — wet or dry, polishes back
Use in: Well-ventilated area; wear a respirator