It is New Tool Tuesday! - New Tools Other Tilers Have Bought Recently

[Concrete guy]

Personally I do, but you’d still expect an item from montolit costing just shy of £100 to work.
The diamond coating is very fine and evenly spread too.
Very disappointing I must say.

What are running it in? A grinder?

 

[Italy]

I have come to get you Antonio 🙂

View attachment 100528

impossible, they come from Florence. See the FI plate? It is the country of matteo renzi the CAZZARO TOSCANO

 

[Old Mod]

What are running it in? A grinder?

Yes tried variable too.

 

[Flintstone]

What about a vacuum brased hole cutter that’s a finer grit than the usual chippy type, do they exist ?

 

[Concrete guy]

Yes tried variable too.

Put an adaptor on it and run it in a drill driver. Just looking at it I figure it needs to be sub 1000rpm to be controlable.
It's the speed that causes chipping.

 

[Concrete guy]

What about a vacuum brased hole cutter that’s a finer grit than the usual chippy type, do they exist ?

They exist, but the issue is they take longer to cut. The longer the cut, the more abrasion/heat and the shorter the lifespan.

I have a feeling the sigma or Montolit bits might be #40/50. It's worth having a look on the packing to check.

 

[Waluigi]

Has anyone tried the Montolit Killer Gres?

They look like a Diamond sintered hole saw which is segmented.

Most of the VB holesaws I have seen and used tend to be fairly rough. Funnily enough the finger bits I just tested are very fine compared to the same brand of hole saw and cut much cleaner.

 

[Old Mod]

What about a vacuum brased hole cutter that’s a finer grit than the usual chippy type, do they exist ?

Yeah they do, I have a worn out one. Trouble is don’t know who makes it and tool store I bought it from has gone now. It’s very kool cos you can replace the barrel as opposed to the whole thing.
If only I knew who made it!!!! 😡😀

 

[Waluigi]

Another problem with the VB hole saws and chipping is that they are designed to be drilled and the grinder/drill whatever is moved in a circular motion whilst drilling to stop overheating and to clear dust.

I suppose if I want a perfect cut, I’ll use my Marcrist wet bits. Very rarely need a perfect cut.

 

[Concrete guy]

These came today.

View attachment 100314

Has anyone tried the Montolit Killer Gres?

They look like a Diamond sintered hole saw which is segmented.

Most of the VB holesaws I have seen and used tend to be fairly rough. Funnily enough the finger bits I just tested are very fine compared to the same brand of hole saw and cut much cleaner.

If it helps, from the image I'd say they were around the #70/80 grit mark, which is why you'll find them a lot cleaner/smoother. They should really be telling you what grit these are so have a look through the small print to see if it's in their specs.


I've just had a look at the specs on the Motolit Killer Gres. These seem to have been developed to solve the problem of 20mm thick Porcelain that's become quite fashionable for patios.

This stuff can be like kryptonite depending on the manufacture/density. It's now often referred to as UDM or UHM (Ultra Dense/Hard Material). Whilst being named porcelain, it's not the same as the 8mm/10mm stuff normally used.

That would probably be good for grade 5 stuff, but I imagine it could be quite aggressive. The step segment does two things, it aids waste material removal and helps cooling/expansion.