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Large format porcelain tile cutter

Updated: October 2026

You have a 600 mm square or a 1200 mm porcelain plank on a UK floor, and a short rail will not grow to match it. A large format porcelain tile cutter in this set is the Rubi HIT-1200 N: 120 cm straight, 85 x 85 cm on the diagonal, 3–15 mm, 800 kg, £521.99 with a bag. The HIT-850 N at £284.94 is the top pick for porcelain that actually fits an 85 cm bed, not for a 600 mm square turned corner to corner. The Speed-62 N at £240.79 is out of this job. The [Rubi tile cutter comparison](/hub/cutting-tools/rubi-tile-cutter) holds the three amazon.co.uk cards. The Products Compared editorial team read those listings and Rubi's HIT-N page on 19 October 2026. A qualifying purchase can earn us a commission at no extra cost to you. There is no lab test.

You have a 600 mm square or a 1200 mm porcelain plank on a UK floor, and a short rail will not grow to match it.

Our top picks

Rubi Rubi HIT-850 N

Best overall

Rubi Rubi HIT-850 N
8.8/10about £284.94
View offer
Rubi Rubi Speed-62 N

Best value

Rubi Rubi Speed-62 N
8.6/10about £240.79
View offer
Rubi Rubi HIT-1200 N

Alternative

Rubi Rubi HIT-1200 N
8.4/10about £521.99
View offer
On this page
  1. 1.Straight cut or diagonal
  2. 2.Thickness is a separate limit
  3. 3.Support, flex, and the other tools

Straight cut or diagonal

The side of the tile is not the score you make when you turn it. Rubi rates each HIT-N bed twice: the longest straight line, then a square that still fits on the diagonal. On amazon.co.uk the HIT-1200 N is 120 cm straight and 85 x 85 cm on the diagonal. The HIT-850 N is 85 cm straight and 60 x 60 cm on the diagonal. Rubi's catalogue for Speed-62 N reference 14975 is 62 cm and 44 x 44 cm, so that listing is not a large-format tool even if an amazon attribute also shows 77 cm. A 1200 x 600 mm plank scored along the long edge needs 1200 mm of bed. Only the HIT-1200 N in this set states that length. The HIT-850 N stops at 85 cm, about 350 mm short. If you only ever score the 600 mm side, the shorter HIT bed can still cover that one line. A 600 x 600 mm tile scored corner to corner is geometry, not a Rubi measurement: 600 × √2 is about 849 mm. That does not fit a 60 x 60 cm diagonal rating. BuildWiz puts the same 600 mm square at about 850 mm on the diagonal. The HIT-1200 N's 85 x 85 cm rating is the one that covers that turn. Family duty belongs on HIT versus Speed.

Thickness is a separate limit

A bed that reaches 1200 mm does not license every porcelain thickness. Both HIT listings on amazon.co.uk state 3–15 mm in one or two passes, with 800 kg of separation and a 22 mm wheel in the box. They also ask for a sample cut when the ceramic is thicker than 15 mm, or when it has internal stress or a difficult finish. Tradetiler, selling the HIT-1200 N in the UK, is stricter than the spec sheet. The shop says 20 mm porcelain is unsuitable on that machine and treats about 10 mm as the thickness they see in practice. That is one retailer's experience. It does not delete Rubi's 3–15 mm line. If your slab is 20 mm, a score-and-snap on this HIT-1200 N is the wrong bet even though the rail is 120 cm long. Rubi's TX-MAX page sits outside this Amazon set: 1200 kg and up to 21 mm. A wet saw is the other step when the sample snap fails or the piece is a 20 mm outdoor slab. Wellers Hire lists a manual 1200 mm cutter as a Rubi TX-1200-N, from about £23 to £80 excluding VAT; those figures are not the HIT-1200 N on ASIN B08SKX8MR1. Sundog Hire lists a Rubi DC250 Python 1200 wet cutter from about £40 a day. Both hire prices are examples, not a quote for your postcode. How to score once is on how to use a Rubi tile cutter.
Rubi Rubi HIT-850 N

Testsieger

Rubi Rubi HIT-850 N
8.8/10about £284.94
View offer

Support, flex, and the other tools

A 1200 mm porcelain plank is a lever. If the middle of the score hangs, the break starts away from the line. Both HIT listings cite four aluminium arms. Use them, and keep the tile on the bed through the snap rather than letting an end drop. The HIT-1200 N is 15 kg with a carry bag on part 26962. One review on the HIT-1200 N, written outside the UK, reported the guide rails flexing in the middle on 60 x 120 tiles, so pressure went uneven and tiles broke. That is one voice against 4.2 from 48 amazon.co.uk ratings, not a lab deflection test. Keep offcuts while you find out whether your batch and your floor show the same flex. Hiring for one room is sane when you do not want £521.99 for a weekend. Buy the HIT-1200 N when the cuts are 120 cm or an 85 cm diagonal, the porcelain sits in the 3–15 mm band, and you can spare tiles while you check the rail. If every score fits 85 cm straight and 60 x 60 cm on the diagonal, the HIT-850 N at £284.94 remains the cheaper porcelain bed in this set. The best Rubi tile cutter page is the conditional pick when size is already settled.

Common questions

Will the HIT-850 N cut a 600 x 600 mm tile on the diagonal?
No. A 600 mm square scored corner to corner is about 849 mm (600 × √2), which does not fit Rubi's 60 x 60 cm diagonal rating. A 600 mm side cut can still fit the 85 cm straight bed. For the diagonal you need the HIT-1200 N's 85 x 85 cm rating.
Will the HIT-1200 N cut a 1200 x 600 mm tile in a straight line?
The listing states a 120 cm straight cut, so a 1200 mm edge is the length that listing is for. That is not a promise about thickness, glaze, or a rail that stays rigid. One review reported flex on 60 x 120 tiles. Score a spare from the same batch, and keep the plank supported on the arms through the snap.
Can I snap 20 mm porcelain on the HIT-1200 N?
Not as a plan. This HIT listing is 3–15 mm, with a sample-cut warning above that. Tradetiler calls 20 mm porcelain unsuitable and treats about 10 mm as the thickness they see in use. That is the shop, not a rewrite of Rubi's 15 mm bullet. For 20 mm, hire, a wet saw, or TX-MAX.
Why do long tiles break in the middle of the score?
The usual faults are a second score, a tile hanging off the bed, and a rail that flexes so the wheel pressure is uneven. The HIT-1200 N review that mentioned flex was on 60 x 120 tiles. Support the full length on the four arms, score once, then snap. If two samples from the same batch fail, stop and cut wet.
Is hiring a cutter sane for one room?
Yes, if you only need the long bed for a weekend and you do not want £521.99 sitting in a shed. Wellers Hire's 1200 mm manual, listed as a Rubi TX-1200-N, and Sundog's DC250 Python wet cutter are examples of that route, with prices that will change by branch. They are not the amazon.co.uk HIT-1200 N, and the TX-1200-N's 20 mm line is not a spec you can borrow for ASIN B08SKX8MR1.
When is TX-MAX or a wet saw the honest next step?
When the porcelain is around 20 mm, when two sample snaps have failed, or when you need a notch, a curve, or a mitre a rail cannot cut. Rubi's TX-MAX page cites 1200 kg and up to 21 mm, outside this Amazon set. The HIT-1200 N stays the large-format rail in this comparison only while the tile fits 120 cm, 85 x 85 cm, and the 3–15 mm band.

Related pages

Rubi tile cutter buying guide

Rubi tile cutter

Best Rubi tile cutter: match the tile, not the stars

Rubi HIT vs Speed: porcelain duty before bed length

How to use a Rubi tile cutter: score once, then snap

Sources

Sources from the research digest. Listing prices, stars and review counts are the amazon.co.uk lines for 19 October 2026.

  1. Rubi HIT-N manual cutter (retrieved 19 October 2026)
  2. Rubi SPEED-N manual tile cutters (retrieved 19 October 2026)
  3. Rubi scoring wheels (retrieved 19 October 2026)
  4. HSE — Silicosis (retrieved 19 October 2026)
  5. HSE — Manual handling (retrieved 19 October 2026)
  6. Consumer Rights Act 2015, section 22 (retrieved 19 October 2026)
  7. Tradetiler — Rubi HIT-1200 N (retrieved 19 October 2026)
  8. amazon.co.uk — Rubi HIT-850 N (B091Z4RPZV) (retrieved 19 October 2026)