Cone step drill hole cutters

[gazdkw82]

Looking at getting a set of cone step drill bits buts it's a mindfield. So many seem really cheap but promise the world.

All seem to be Chinese produced and labelled as titanium, is there a particular brand, variety that I should be looking at? I always prefer to buy quality for longevity.

 

[Pete999]

RS do a very good set, had mine for about 10 years

 

[Dillb]

You looking at using them to drill metal or plastic?

 

[Andy5678]

I have had the same ones for about 13 years. Think they were from RS components. Served me well and hopefully will for more years.

 

[Flanders]

Ive just got a no make set , just use them for drill plastic though i always use hole cuters for metal

 

[gazdkw82]

You looking at using them to drill metal or plastic?

Probably both but more on metal than plastic

 

[Leesparkykent]

Cheap ones are fine for plastic but they don’t last long on metal. Always handy to have though to enlarge holes in trunking etc. For the bog standard size holes in metal I.e. 20mm, 25mm and 32mm I use the armed acceler8 holesaws.

 

[Marvo]

Good cone cutters are helluva expensive and I much prefer the proper hole saws.

 

[PEG]

Get a quality brand,if choosing a cone type cutter,and save it's life,by changing down speeds,as you step up the size increments.
You can re-sharpen them,but it takes a bit of micro-carbide trickery

 

[Pete999]

Get a quality brand,if choosing a cone type cutter,and save it's life,by changing down speeds,as you step up the size increments.
You can re-sharpen them,but it takes a bit of micro-carbide trickery

Agree but for a neater job I prefer these.
Q-Max Sheet Metal Cutter / Hole Punch 20Mm Diameter Round | eBay - https://www.ebay.co.uk/itm/Q-Max-Sheet-Metal-Cutter-Hole-Punch-20Mm-Diameter-Round/112730755413?_trkparms=aid%3D555017%26algo%3DPL.CASSINI%26ao%3D1%26asc%3D20151005190540%26meid%3De4db0c0dc22c4347803142e7fa0e733b%26pid%3D100505%26rk%3D1%26rkt%3D1%26%26itm%3D112730755413&_trksid=p2045573.c100505.m3226

 

[gazdkw82]

I will get a decent hole saw set (probably the armeg sheet metal ones) however if I need to step up or a size that's not in the armeg set I'll need a cone drill

 

[telectrix]

these are the dogs nuts if drilling into trunking with live cables inside. the stop ridge saves a lot of aggro and blue flashes.
Armeg Acceler8 Holesaw 25mm - https://www.axminster.co.uk/armeg-acceler8-holesaw-25mm-504772?gclid=Cj0KCQjw6MHdBRCtARIsAEigMxG4rtDE5COq01AY2MY265C8qUoCr7u99VQ-Lpe_njfWb1WRfXj8g64aAmAzEALw_wcB

 

[Rpa07]

I always get mine from Aldi, for enlarging holes they do the job.
They are also cheap enough to not worry if they blunt a bit.
If the pilot is blunt I’ll pilot with another drill bit and enlarge with the hole cutter. It may waste 45 seconds of my day but I make that up by not chewing my food!

 

[Strima]

I like these for sheet metal, no burrs and a very tidy hole...

https://www.amazon.co.uk/Q-Max-Shee...hole+punch&dpPl=1&dpID=31JoGc0ZykL&ref=plSrch

 

[Sparky_Steve]

my armegs are still going strong after a few years use