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holesaws

A hole saw (also styled holesaw), also known as a hole cutter, is a saw blade of annular (ring) shape, whose annular kerf creates a hole in the workpiece without having to cut up the core material. It is used in a drill. Hole saws typically have a pilot drill bit (arbor) at their center to keep the saw teeth from walking. The fact that a hole saw creates the hole without needing to cut up the core often makes it preferable to twist drills or spade drills for relatively large holes (especially those larger than 25 millimetres (1.0 inch)). The same hole can be made faster and using less power.
The depth to which a hole saw can cut is limited by the depth of its cup-like shape. Most hole saws have a fairly short aspect ratio of diameter to depth, and they are used to cut through relatively thin workpieces. However, longer aspect ratios are available for applications that warrant them.
Cutting with a hole saw is analogous to some machining operations, called trepanning in the trade, that swing a cutter analogous to a fly cutter in order to achieve a similar result of annular kerf and intact core.

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  1. Scott_D

    Floorboard holesaws................

    Are these any good for chipboard flooring? Does the 'plug' fit flat so that you wont see it under carpets?
  2. 3

    Quality Diamond Holesaws drills for very hard porcelain tiles now in PRESTON PR1 1PR

    After four hours of driving from London we reached Preston. And Installed the PORSADRILL diamond core tile drilling system for very hard porcelain tiles into branch. Get a shiny new panel ready and find a space in the very crowded space of the shop. This was Electrical Point UK...
  3. R

    Aldi holesaws coming

    Cheap holesaws coming.... https://www.aldi.co.uk/en/specialbuys/thursday-20th-march/product-detail/ps/p/hole-saw-sets/
  4. 3

    Total Tiles Bathroom Crewe stock PORSADRILL tile drills CW2 6DY HOLESAWS hole bits

    Diamond drilling holes into porcelain tiles with 365-Drills Porsadrill hole saw tile drills At 4.30pm on 30th April 2013 the good people of Crewe took a step closer to an easier life when drilling holes into porcelain tiles. The 365-Drills yellow van pulled up outside on a sunny but cold...
  5. 3

    Reminder: Drilling holes into very hard porcelain tiles with 365-Drills cores SHOW!

    Reminder 30th November 2010 1st December 2010 Two day exhibition for professional installers at Sandown Race Park Surrey. ********* will be attending with their range of diamond core holesaw drills and bits and will demonstrate how to drilling of holes into porcelain tiles with PORSADRILL...
  6. 3

    Grand Designs... 2010 Exhibition in Birmingham. Plumbers see latest innovations !

    Yes its October 2010 and the Grand Designs road-show is back in town for three days. All plumbers need a day off with the family.... Maybe come and look for some new tools or even some new ideas about what is going on in the plumbing market as well as other markets too! Something for everyone...
  7. T

    Diamond drills

    Bought an 8mm wax filled diamond drill for 23 quid a few months ago. I can confirm the claim that they drill 50 holes so if you do a lot of bathromm work with these modern hard tiles/ porceliens theyu are just the job. Local tile supplier sells the but I can't remember the manufacturer. Sorry...
  8. 3

    Bank Holiday MONDAY (Watch Dragons Den...) Its our mate PATRICK on the show !!

    Does the plumbing world need a loo that doesnt smell? Will Deborah Meadon kick up a stink? Will Peter Jones POO POO the idea Is there room for one on James Cann's boat... With Theo tell Mrs-P she needs one for the kids... Yep tonight our mate PATRICK will pitch his solution to those smelly...
  9. 3

    Plumbing engineer? LOOKING FOR TOOLS? Coming up in Coventry ********* InstallerLIVE

    Installer LIVE is coming to Coventry for four days in 2010. InstallerLive 2010! 7th-10th September, Ricoh Arena, Coventry InstallerLive is the UK’s national plumbing, heating and renewables show; meet your suppliers face-to-face, see the latest products put through their paces and...
  10. 3

    Installing a POWERDOCK or Power Dock into a GRANITE kitchen worktop. *********

    Power Docks are now the must have space saving device for kitchen worktops. Whether fitted as an aftermarket item or as part of a new kitchen install a Power-dock or Power dock can add useful plug socket space and versatility to a work top area. Power Docks can add plug sockets to a...
  11. B

    Diamond holesaw sizes...

    Hi Im hoping someone will be able to offer me some help here - im a tropical fishkeeper and have drilled many tanks for overflows with a diamond holesaw. I now have a requirement to go to a larger size to accommodate a 32mm solvent weld tank connector - the outside diameter of the threads...
  12. 3

    New: Jan2010 - Corgi-Direct catalogue with new VAT features Porsadrill *********

    Out now and new for Jan 2010. The latest Corgi catalogue featuring a range of useful tools and products for gas fitters and plumbers. The new catalogue reflects the reverse of the VAT to 17.5% Our own branded product Porsadrill diamond tile drilling cores and holesaws or drill bits feature...
  13. 3

    VAT holiday is OVER - But 365 Drills will hold prices

    Effective from midnight the VAT HOLIDAY of 15% is over. However at ********* we will retain the same retail prices as 2009 and plan to absorb the 2.5% rise. Our best selling drilling kit contains seven diamond drills, cores and holesaws to bore holes into very hard stone material like...
  14. P

    110mm Core drill recommendations

    I have a couple of jobs coming up which will require a 110mm hole for soil pipe cutting. I just cant make up my mind on whether to hire, buy a cheap cutter and use it in my Hammer drill (no clutch :mad:) or shell out god knows how much on a decent cutter and machine. I've already bought two...
  15. 3

    Corgi ESSENTIAL products catalogue features 365-Drills PORSADRILL Tile Drills Page 13

    The latest CORGI-directCatalogue is showcasing 365-Drills Porsadrill Tile Drilling Kits. On Page 13 of the December 2009 Essential Products Front Cover Internal Page (Page 13) Porsadrill is a selection of tile drills cores and holesaws in diamond and are capable of making holes...
  16. 3

    Commercial Diamond Drills for HARD Stone Tiles - Now with Sponge! ********* holesaws

    ********* have now introduced the water cooling sponge for use with commercial diamond drills, holesaws and crowns. To use PORSADRILL follow these easy instructions: Locate the position of the hole on the tile and place the guide plate onto the surface. Press and Hold. Using a standard...
  17. D

    ceramic sink?

    hi guys ive got install 2x ceramic kitchen sinks and will need to drill the hole for the taps, the sinks are reverisable and i presume have markings as where to drill, just wondered what drill bit you would use and any advise as these sinks are £200+ many thanks
  18. J

    how to drill marble?

    hi all Just purchased a solid oak wash stand with marble top, the basin is inset but comes with no pre drilled tap hole. My question is should i purchase a diamond core cutter, make a template and drill the hole myself, or am i likely to hit problems. I am only a d.i.yer so could do with some...
  19. P

    Holesaws sizes for stack?

    What sizes of holesaw bits is a plumber most likely to use? e.g for stack/cistern?
  20. J

    Please Help me!!!!!!!

    Hiya. I have just signed up to this site. I need to ask u all for help! Its my bf birthday soon and he is now in his last few months of training to be a plumber. For his birthday i would like to get him a few tools etc to help him out a bit, thing is i havent got the slightest clue what he...
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