SPX vs Mirka Sanding Discs: Which Suits Australian Panel Shops?

SPX vs Mirka Sanding Discs: Which Suits Australian Panel Shops? | SPX | SPX Abrasives

SPX vs Mirka at a glance

The short version. The dust-extraction and supply sections below are where this decision is usually made, so read those before you commit.

SPX vs Mirka sanding discs comparison for Australian panel shops.
Category	SPX	Mirka	Best fit
Main use case	Automotive sanding and refinish workflow	Dust-managed sanding across an integrated system	SPX for flexible, mixed-tool shops
Disc sizes	150mm-focused trade range	Wide range across many formats	SPX for standardised 150mm shops
Dust extraction	15-hole options, strong when pattern matches	Net and multi-hole designs	Match to your sander and pad
Ceramic options	Yes — built for cost-per-job cut	Yes, across several lines	SPX for value on cut stages
Tool dependence	Works with standard 150mm sanders	Best inside the Mirka tool ecosystem	SPX if you run mixed brands of sander
Supply model	Australian trade/wholesale, Melbourne dispatch	Distributor and dealer network	SPX for simple local repeat supply

Net vs multi-hole vs 15-hole dust extraction

Three extraction designs, three different jobs. This is the part most brand comparisons skip — here is how net, multi-hole, and 15-hole discs actually move dust, and where each one shines.

How net, multi-hole, and 15-hole sanding discs extract dust, and the best-fit stage for each.
Extraction design	How it pulls dust	Best-fit stage
Net (e.g. Mirka Abranet)	An open mesh extracts across the whole face, so dust has only a very short path to a hole — Mirka cites roughly 0.5mm to the nearest extraction point.	Fine finishing and dust-critical work where surface cleanliness shows.
Multi-hole	Many drilled holes spread pickup across the disc, but extraction depends on the holes lining up with the backing pad.	General refinish work when disc and pad patterns match.
15-hole (SPX)	A defined 15-hole pattern clears debris well when matched to a compatible 15-hole pad and extractor.	Coarse and mid-grit refinish stages — filler, primer, guide coat.

Product range and fitment compared

Cautious by design: Mirka specs vary by line and region. Always confirm fitment against the specific Mirka product you currently run.

SPX and Mirka product range and dust-extraction fitment compared.
What you are buying	SPX	Mirka
150mm sanding discs	Core focus of the range	Available across multiple lines
Dust extraction design	15-hole pattern, pad-dependent	Net and multi-hole designs
Ceramic options	Yes — positioned for cost-per-job cut	Yes, across several lines
Tool requirement	Standard 150mm sanders	Best with Mirka tools and pads
Grit range	Coarse cut through fine prep for refinish	Very broad across applications
Supply	Direct trade/wholesale, Melbourne dispatch	Through distributor and dealer channels

SPX vs Mirka sanding discs FAQ

Is SPX a good alternative to Mirka sanding discs?+

For many Australian panel shops, yes. Mirka built its reputation on dust-managed sanding and a tightly integrated tool-and-abrasive system, and that system is genuinely good. SPX is the better fit when you want strong sanding-disc performance and dust extraction without committing to one brand ecosystem — especially if you run mixed sanders and want simpler local trade supply.

How do SPX discs compare to Mirka net or multi-hole discs?+

Mirka net-style discs extract dust across the whole face, which is a real strength on fine finishing. SPX uses 15-hole dust extraction, which performs strongly when the disc and backing pad hole patterns line up. For coarse and mid-grit refinish work, well-matched 15-hole discs handle dust well; for very fine finishing, net designs still have a following. The honest answer is to match the disc to the stage and your sander.

Do 15-hole SPX discs fit Mirka sanders and pads?+

It depends on the pad. Dust extraction only works when the disc hole pattern matches the backing pad and the sander. If you run a Mirka pad with a specific multi-hole layout, confirm the SPX 15-hole pattern lines up before switching in volume. Our 15-hole fitment guide walks through exactly what to check.

Does SPX sell 150mm sanding discs?+

Yes — 150mm is the core of the SPX range. It is the 6-inch workshop standard for automotive refinishing, so the discs, grits, and dust-extraction options are all built around it.

Are ceramic SPX discs worth it versus Mirka?+

For repetitive cut stages like filler shaping and primer sanding, ceramic usually earns its keep by holding cut longer and reducing disc changes. SPX ceramic discs are positioned to give that performance at a competitive cost per job. Compare them against your current Mirka discs on one real stage and count the changeovers.

Can trade buyers order SPX abrasives wholesale?+

Yes. SPX supplies trade and wholesale buyers directly with Melbourne dispatch, which keeps repeat ordering simple and local rather than tied to distributor stock.

SPX vs Mirka: Which Abrasive System Is Right for Your Workshop?

SPX vs Mirka at a glance

SPX 15-hole discs in this comparison

SPX 150mm Ceramic Sanding Discs - 120–1200 Grit (100 pcs)

SPX 150mm Ceramic Sanding Discs - 40–80 Grit (50 pcs)

SPX 150mm Sanding Disc – MIXED Packs (100pcs)

Dust extraction and hole pattern — the real Mirka question

Fitment warning before you reorder

Net vs multi-hole vs 15-hole dust extraction

How to compare them honestly

The fair SPX vs Mirka test

What each brand is actually known for

What Mirka is known for

What SPX is known for

Where they overlap

Product range and fitment compared

Cost per job, not cost per packet

Who should choose SPX

Who should choose Mirka

Final verdict

Keep comparing

SPX Abrasives Trade Team

How we compare sanding discs

Sources and references

SPX vs Mirka sanding discs FAQ

Test SPX against your current Mirka discs