Cheap Hole saws needed.

[Donwill]

Anyone know where I can buy two hole saws 20mm and 25mm complete with arbour. I only need to make 3 holes in an ABS enclosure, I can't find anything less than £19 for a set.

Cheers Don

[js.b1]

A HSS stepped drill is about =A38-10 on Ebay.

It will virtually guarantee a round hole which is more central than a holesaw can achieve and you can do all the sizes inbetween (typically

6-30mm).

The only problem is most use a 2mm step so can do 24mm or 26mm so a little filing to do (not much for ABS). The only other problem is thickness - the step drill can only do so much depth (about 4-5mm) so if the enclosure is 6mm wall then you will need to do a little filing.

Holesaws are a crude tool with enclosures as the pilot hole rarely ends up where you want it and the hole is usually oversize whereas holes cut above are "sharp-to-dimension". Step drills are a much better solution.

[dennis]

[Andy Dingley]

For that job I'd buy an adjustable tank cutter (old one off eBay?) and do it with a hand-cranked brace.

[fred]

Got a varisized set of 3 from Lidl/Aldi for 8quid a while back for just this purpose, excellent tool(s).