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- Sanding Disc 8" Soft by 3M
Sanding Disc 8" Soft by 3M
Fits all standard (5/8" shaft) slow speed polishers. Maximum operating speed - 3,000 rpm. Ideal for use with fine grade abrasives for finish sanding topcoats on contoured or curved surfaces.
• A soft, orange foam pad with a very flexible edge - suitable for hulls and other curved surfaces
• Appoximate 45° bevel makes for a softer edge, better contact on contoured surfaces, and allows the sanded area to be "featheredged" or more easily blended
• Excellent conformability
• Blue vinyl pad face provides good disc adhesion yet allows easy removal
• Sold by the each; 1 per case
Heavy on the technical side: Should you use a soft or firm sanding disc backing pad?After you have decided between Stikit or Hookit & chosen no-hole or clean sanding discs & selected the disc diameter, you will still often be left with the choice of a firm or a soft backing pad. As a general rule, you should use coarser abrasive discs on firm backing pads & finer grit discs on soft backing pads.
- Soft Backing Pads • Soft pads are not intended for use with very coarse abrasive discs, as the higher stresses induced by very coarse abrasives fatigues the foam prematurely. Having said that, a soft pad can be used with coarse grit discs for heavy material removal on rounded surfaces - like a sailboat hull - where it would be difficult to maintain full surface contact with a stiffer, firm backing pad. Just don't expect the soft pad to last as long.
- Firm Backing Pads Using coarse discs on a firm backing pad works very well, as long as the work surface is flat. Using a firm pad on a curved surface can easily result in hard-to-remove gouges and scratch marks. If the surface isn't flat - again, like a sailboat hull - you will generally want to use a softer pad for full surface contact, no matter what the grit of the sanding disc. Firm pads are also recommended for leveling uneven surfaces - such as paint brush strokes and runs. In this application, a soft pad might simply conform to raised areas, rather than cutting them down.