Diameter and thread pitch are the two critical points. The disc diameter must match the backing pad diameter exactly: a 115 mm disc needs a 115 mm pad, a 125 mm disc needs a 125 mm pad. Beyond diameter, confirm the backing pad thread matches your grinder spindle (M14 is standard on most angle grinders sold in the UK, but always verify before ordering). A mismatched pad will not support the disc correctly and can cause uneven wear or disc failure under load.
For weld dressing and heavy stock removal on mild steel, 24 to 36 grit is the working range for most fabrication shops. 24 grit removes material fastest and suits rough weld spatter or heavy pitting; 36 grit gives a cleaner finish while still removing material at pace. Move to 60 grit once the surface is flat and you are preparing for further finishing. Avoid starting too fine: a 60 grit disc on a heavy weld will wear quickly before the job is done.
Yes, though grit selection shifts. On timber, body filler and composites, mid to fine grades (80 to 120 grit) are more appropriate than the coarse grades used on steel. Fibre discs with an open-coat abrasive layer are preferable for softer substrates as they resist loading. Avoid using discs that have been used on ferrous metal for subsequent work on bare wood or painted surfaces, as embedded metal particles can cause staining or contamination.
Pack sizes vary by brand and disc specification. Product listings on the site show the pack quantity in the product title or specification tab. Trade buyers needing larger volumes or split-grade assortments should contact the team directly at [email protected] with the disc diameter, grit grades and approximate quantities required. Pricing and availability for volume orders is confirmed by the team on request.
Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. Refunds are issued to the original payment method once the return is inspected.
Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and 'Check where we deliver' confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.
Fibre Sanding Discs
Fibre sanding discs are a workshop staple wherever aggressive material removal meets a right-angle grinder: they cut through weld spatter, rust, paint and corrosion on metal fabrications, and they shape and flatten timber, composites and fillers without loading quickly. The coated-abrasive backing gives the disc enough flexibility to follow mild contours while the open grain structure keeps cut rate high across the working life of the disc.
PartsForMachines lists fibre sanding discs and the accessories that go with them under two sections within this category. Fibre Sanding Discs Range covers the discs themselves, arranged by diameter, grit grade and abrasive type. Backing Pads covers the rubber and fibre support pads that mount to the grinder spindle and hold the disc flat under pressure: matching pad to disc diameter and thread is the first step before selecting grit. Across this section, Abracs supplies the fibre sanding discs.
Choosing the right disc starts with the substrate. Coarser grits (24 to 60) handle heavy stock removal and weld dressing on steel; mid-range grits (80 to 120) suit feathering body filler or preparing primed surfaces; finer grades finish timber and composites before coating. Disc diameter must correspond to the backing pad fitted to the grinder. If the product page does not make the compatibility clear, use Ask Simon on the relevant product page for an instant fitment check.
PartsForMachines operates as Authorised Distributor and Seller for the brands listed in this section. For trade enquiries or volume requirements, contact the team at [email protected] or WhatsApp 07754288583.
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