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brightspark
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buy the cheapo screwfix holesaws but use on the starret arbours and pilot drills . the cheapos just bend and snap on
Barking Mat
Cuddler of hedgehogs.
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The new Bosch hole cutters are good.
Thanks for the replies folks!
As usual we strayed slightly off topic but that's part of the fun!
A trammel type cutter generally leaves the part you remove useless for anything else as leaves a ragged cut.
I like the idea of using our bandsaw, might have a go at making the first type of jig.
Will also try a set of those cheap hole saws, should work ok in the pillar drill.
As usual we strayed slightly off topic but that's part of the fun!
A trammel type cutter generally leaves the part you remove useless for anything else as leaves a ragged cut.
I like the idea of using our bandsaw, might have a go at making the first type of jig.
Will also try a set of those cheap hole saws, should work ok in the pillar drill.
gaz1
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as your making wheels make a jig that you can just drill
then fit a dowel to the hole and use the jig method
Onoff
In the land of the unfinished project I am King!
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The old Bosch hole cutters were better! With those you could unscrew the quick release fittings and put on other makes of hole saw. Now, Bosch weld the quick release fitting to the hole saw. Gits.
Luckily you can buy the quick release things as an aftermarket item on eBay etc.
Agroshield
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That is because of the grind on the cutter. Change the grind so it scores the inside of the cut.
Look at a lip and spur bit for a traditional brace. The lip scores the perimeter of the hole to stop tearout before the chisel part removes the material. Since a trammel cutter is designed for cutting holes, it will do the same in standard configuration. If you want to keep the middle bit, it is the perimeter of that bit which needs scoring.
Barking Mat
Cuddler of hedgehogs.
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Hmm, think one of us is confused.
The new system is a mandrill with different holesaws, but not compatible with other models.
Get some photos later in the week.
Onoff
In the land of the unfinished project I am King!
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No confusion here. The bits on the Bosch holesaws used to be removable. You just unscrewed them and you could put in another make of hole saw.
People sell them as aftermarket items like this. Chuck one on a Sandvik, Morse, Starrett hole saw and you can use with a Bosch Progressor quick change mandrel:
Pretty sure on the latest Progressor hole saws, the previously removable bit is integral to the hole saw and no longer removable.
hotponyshoes
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These might be worth a go if you can get them in the size you require. (And have a multi-tool with a bit of oomph for bigger sizes)
www.toolstation.com
I have not tried them on wood but I have used them on plastic (as they don't melt it and don't spin any nasty scratchy swarf around) and they are certainly more accurate than the normal ones.
SMART Trade Hole Saw
The 76mm hole saw makes cutting out for pipes and spot lights a quick and easy job. Simple and safe to use, it provides a clean and precise cut, even in confined spaces. Offers a controlled cut and minimises potential damage to hidden wires. Designed to cut through plasterboard. Universal...
www.toolstation.com
Onoff
In the land of the unfinished project I am King!
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These might be worth a go if you can get them in the size you require. (And have a multi-tool with a bit of oomph for bigger sizes)
I have not tried them on wood but I have used them on plastic (as they don't melt it and don't spin any nasty scratchy swarf around) and they are certainly more accurate than the normal ones.SMART Trade Hole Saw
The 76mm hole saw makes cutting out for pipes and spot lights a quick and easy job. Simple and safe to use, it provides a clean and precise cut, even in confined spaces. Offers a controlled cut and minimises potential damage to hidden wires. Designed to cut through plasterboard. Universal...
If they're anything like the square / rectangular multitool cutters that are meant to cut out 1G and 2G back boxes in one hit then not sure I'd bother.
