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If you’ve never tried putting a 5-1/2″ hole in a piece of 1/8″ stainless-steel, my advice is to avoid attempting something so mad. However, if you need to put big holes in tough materials, there’s no substitute for a set of carbide hole saws outside of a knee mill, water jet, or EDM, and none of those are easy to find in the average home shop.

Carbide is a machinist’s darling, and the material is superb for this set of 14 hole saws from MK Morse. $125 for the set is steep, but discounted thanks to Amazon’s usual excellent prices. Milwaukee makes a similar set of five hole saws, but a careful user can cut just about anything with a good, high-torque drill motor or drill press. The ability to tear a sizable, accurate hole in just about anything can be a bit of a tall order for standard bi-metal hole saws, but carbide is up to the task.

Via Amazon [What’s This?]

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3 Responses to Carbide Hole Saws

  1. fred says:

    Hole saws and their cousins (core drills) now come in more varieties and designs than on prior years.

    While the bi-metal utility hole saws will still work on many materials (including thin stainless steel like sink decks) the carbide tipped varieties [multi-tooth like Bosch (Germany) and Profit (Boorwerk-Holland) sell] or single tooth [like Milwaukee Big Hawgs (China) and Lenox one-tooth (China) ] will outperform them on materials like fiber cement board – and even plaster walls. For sizes where we do a lot of this sort of hole cutting in these tough materials – we have switched over to these carbide-tooth saws.

    For roughing in pipe and conduit in normal (no embedded nails et.) wood framing members – we avoid hole saws entirely – much preferring the speed of selfeed bits.

    For cutting into hard materials like cast iron and ceramic tile we prefer the tungsten carbide grit edged hole saws talked about here. Many of ours carry the Starrett Brand – (USA) or the Lenox brand (ours were made in England). – but MK Morse makes a quality product.

    For Stone – we switch to wet drilling with diamond core drills – with 5/8 screw – driven by variable speed angle grinders.

  2. heywood says:

    I have been pricing these out…would like to be able to afford the Greenlee set, but saw that Ideal’s set is priced at somewhere around 1/2 price. Has anybody had luck with Champion’s carbide hole saws?

  3. shopmonger says:

    I would agree with Fred, for most people these are overkill, but if you do them a lot, and you really need something that lasts and saves oyu time, then these are your boys…. cool non the less

    ShopMonger

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