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
Cheap Hole saws needed.
Sep 04, 2009
4 Replies
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.
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For that job I'd buy an adjustable tank cutter (old one off eBay?) and do it with a hand-cranked brace.
Got a varisized set of 3 from Lidl/Aldi for 8quid a while back for just this purpose, excellent tool(s).
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