Rubi Angle Grinder Discs & Accessories
Rubi grinder discs are for sorting tile edges, smoothing cuts and cleaning up awkward trims without chipping good material or wasting time on site.
When you're dressing porcelain, easing sharp cut edges or flattening adhesive left where it should not be, this is the kit you reach for. Rubi grinder discs and rubi angle grinder accessories are made for tilers and fitters who need a clean finish without chewing through tile faces. You will also find rubi polishing pads and rubi grinder attachments here for edge finishing, fettling mitres and refining visible work before handover. If you are already running Rubi Tools, this range makes sense for keeping your cutting and finishing kit matched up. Pick the right rubi grinding disc for the material, the grinder size and the finish you need.
What Are Rubi Grinder Discs Used For?
- Smoothing fresh tile cuts on porcelain and ceramic stops sharp edges catching fingers, trims or grout lines when you are fitting out kitchens, bathrooms and commercial washrooms.
- Cleaning up chipped corners and slight saw marks after cutting helps tilers rescue expensive material instead of binning a tile that only needs a quick tidy up.
- Refining mitred edges on visible external corners gives you a neater finish before bonding and grouting, especially on feature walls and boxed-in pipework.
- Using a rubi diamond grinding disc to take down high spots or stubborn adhesive residue saves time during repair work, refits and snagging jobs.
- Finishing edges with rubi polishing pads is handy when the cut edge will be seen, such as niches, steps, reveals and exposed stone or porcelain details.
Choosing the Right Rubi Grinder Discs
Match the disc to the tile and the finish you want. That is what stops you marking good material and doing the same edge twice.
1. Grinding or Polishing
If you are just knocking off a sharp edge or cleaning a cut, go with a grinding disc. If the edge will be seen on the finished job, use rubi polishing pads after grinding so it looks finished rather than just rubbed back.
2. Match It to the Material
Porcelain is less forgiving than softer ceramic, so do not assume any disc will do. If you are on hard porcelain or dense stone, pick a rubi diamond grinding disc built for that harder surface or you will glaze the disc and waste time.
3. Check the Grinder Size
A 115mm grinder needs the right size accessory, full stop. Do not buy a disc on guesswork because the wrong diameter or bore will leave you stuck when the job is waiting.
4. Fine Finish or Fast Removal
If you are doing first pass clean-up on hidden edges, faster material removal matters more. If it is a visible corner, niche or step edge, sacrifice a bit of speed and choose the accessory that leaves a cleaner finish.
Who Uses These on Site?
- Tilers are the main users because they need a rubi tile grinding disc for easing cut edges, cleaning mitres and getting porcelain ready for a proper finish.
- Bathroom and kitchen fitters keep these in the van for trimming and tidying exposed edges where a rough cut would stand out straight away.
- Stone and floor installers use rubi polishing pads and grinding accessories when they need visible edges cleaned up before sealing or handover.
- Snagging and maintenance teams reach for these when replacing cracked tiles or correcting old cuts without ripping out a full section of finished work.
The Basics: Understanding Rubi Grinder Discs
These accessories are all about what stage of the edge finish you are at. Some remove material fast, others refine the surface so it is fit to be seen.
1. Grinding Discs for Shaping and Clean-Up
A rubi grinding disc is used to take off roughness, sharp corners and saw marks. That makes it the go-to for cleaning tile cuts, easing edges and correcting small mistakes before the tile goes in.
2. Diamond Options for Harder Materials
A rubi diamond grinding disc is what you want when standard abrasive accessories struggle on hard porcelain or dense stone. It keeps cutting where softer options can slow down or leave a rougher finish.
3. Polishing Pads for Visible Edges
Polishing pads come in after the shaping is done. They refine the edge so exposed cuts on niches, window reveals and mitres look deliberate rather than like they were just knocked back on site.
Rubi Angle Grinder Accessories That Keep the Finish Clean
The right add-ons save wasted tiles, rough edges and repeat trips back to sort a finish that should have been done first time.
1. Polishing Pads
These are the ones to get when a cut edge will stay on show. They stop you leaving grinder marks on external corners, steps and tiled niches where a rough edge looks poor the second the client sees it.
2. Diamond Grinding Discs
If you are working dense porcelain or harder stone, this saves the usual headache of a disc that barely cuts and overheats the edge. A proper rubi diamond grinding disc keeps the job moving and gives you more control.
3. Replacement Flanges and Fittings
Worth checking when you are swapping between attachments. Worn or incorrect fittings can give you wobble, poor finish and a disc that never feels right on the grinder.
Choose the Right Rubi Grinder Discs for the Job
Use this quick guide to match the accessory to the finish you need.
| Your Job | Rubi Disc or Type | Key Features |
|---|---|---|
| Cleaning sharp cut edges on ceramic tiles | Standard rubi grinding disc | Fast edge clean-up, easy control, good for general finishing before fixing |
| Smoothing hard porcelain after wet saw cutting | Rubi diamond grinding disc | Built for dense material, steadier cut, less struggle on tougher tiles |
| Finishing visible mitres and external corners | Fine grinding disc or polishing pad | Cleaner finish, better for exposed details, less chance of obvious grinder marks |
| Snagging chipped edges on fitted tiles | Compact grinding accessory | Good control in tight areas, handy for repair work and small corrections |
| Refining exposed edges on niches and reveals | Rubi polishing pads | Smooth final surface, better edge appearance, suited to handover standard work |
Common Buying and Usage Mistakes
- Buying for the grinder before buying for the tile is a common one. If the disc fits but is wrong for porcelain or stone, you will get slow cutting, more chipping and a rough finish.
- Using a coarse disc on a visible finished edge saves seconds and costs you later. For exposed corners and niches, follow with a finer accessory or polishing pad so the job looks finished, not rushed.
- Ignoring disc size and bore fit catches people out all the time. Check what your 115mm grinder actually takes or the accessory may not mount correctly.
- Forcing the grinder too hard shortens disc life and can mark the tile face. Let the accessory do the work and keep a steady hand, especially on brittle edges and mitres.
- Trying to rescue a worn-out disc for one more room is false economy. Once it stops cutting cleanly, swap it out or you will spend longer on each tile and risk spoiling the finish.
Diamond Grinding Discs vs Polishing Pads vs General Grinding Discs
Diamond Grinding Discs
Best for hard porcelain, dense tiles and tougher edge correction. If you are doing regular porcelain work, this is the one that earns its keep. It removes material better, but it is still for controlled finishing rather than rough demolition.
Polishing Pads
These are for the final finish, not heavy removal. Use them when the cut edge will stay visible and needs looking clean under good light. They are slower, but they give a better handover result.
General Grinding Discs
A solid choice for everyday edge easing, cleaning cuts and tidying ceramic. They are often the practical middle ground for van stock, but on very hard porcelain you may want to step up to a dedicated diamond option.
Maintenance and Care
Clean Dust Off After Use
Porcelain and tile dust cakes onto accessories quickly. Brush them down after use so build-up does not affect cutting feel or leave marks on the next finished edge.
Store Them Flat and Dry
Do not chuck discs loose under the rest of the van kit. Keeping them dry and protected helps prevent knocks, warping and edge damage that ruins accuracy.
Check for Wear Before Starting
A disc that is worn unevenly or damaged will show up straight away on tile edges. Give it a quick look before you start on expensive material, not after the first bad pass.
Replace When the Finish Drops Off
If the accessory is taking longer, running hotter or leaving rougher edges, it is time to swap it. Pushing a tired disc just wastes time and risks spoiling visible work.
Why Shop for Rubi Grinder Discs at ITS?
Whether you need a single rubi tile grinding disc, rubi polishing pads or a full spread of rubi angle grinder accessories, we stock the range tilers and fitters actually use. It is all in our own warehouse and ready for next day delivery, so you can get the right finishing kit on site without holding the job up. You can also match up with Rubi Diamond Blades, Rubi Circular Saws, Rubi Drill Bits and Rubi Tiling Tools.
Rubi Grinder Discs FAQs
What angle grinder accessories does Rubi make?
Rubi makes a practical spread of angle grinder accessories for tile and stone finishing, including grinding discs, rubi diamond grinding disc options, polishing pads and other rubi grinder attachments for edge clean-up and refinement. They are mainly aimed at tilers who need to dress cuts, tidy mitres and finish visible edges properly.
Are Rubi grinding discs suitable for porcelain?
Yes, many are, but you need to pick the right one. Porcelain is hard and less forgiving than basic ceramic, so a rubi grinding disc built for dense material, especially a diamond option, will give you a cleaner result and less faff on site.
What size discs fit a 115mm angle grinder?
A 115mm angle grinder takes 115mm accessories, but always check the bore and mounting details as well. Do not assume every disc will fit just because the diameter looks right, as that is how people end up with kit they cannot use on the day.
How long do Rubi grinding discs last?
That depends on the material, the pressure you use and whether you are doing rough clean-up or fine finishing. Used properly on the right tile, they last well, but hard porcelain and heavy-handed grinding will wear any disc faster. If it stops cutting cleanly, replace it before it starts ruining edges.
Do Rubi discs fit other brands' angle grinders?
Often yes, as long as the disc diameter, bore and mounting match your grinder. The safe answer is simple. Check the size and fitting on both before buying, especially if you are using a 115mm grinder from another brand.
