i bought about 30 long ones all diffrent sizes quality makes for 2 quid a piece from boot sales just sharpen them when needed . its just the same as the bosh mulidrills but for free I've sharpened the tip to make effectively a spade drill and had good results.I’m hoping somebody can point me in the right direction here as I’m struggling! I’m after some SDS Plus bits for drilling metal (steel plate to be precise). Surely they’re available?
Thanks.

Not sure you'll find any, the idea of sds is it allows the bit to float and the hammer action to do its thing, you want a hss metal bit to be held firmly and not wobble about, get a sds adapter and chuck
all the sds drills i have you get rotary and rotary hammer . even if u got the sds chuck adapator they still wobble a bitNot sure you'll find any, the idea of sds is it allows the bit to float and the hammer action to do its thing, you want a hss metal bit to be held firmly and not wobble about, get a sds adapter and chuck
HSS twist drills on an SDS shank certainly used to be available 15 or 20 years ago. I still have 3 or 4 that I think came from RS, probably in the 1990s. I looked pretty hard for them online a year or two back with no success whatsoever, despite knowing with absolute certainty that they are/were a real thing. I used to use them for site work where, for a series of holes, it was easier to drill pilot holes with a conventional battery drill, then step up to final size with the SDS drill and avoid faffing about with the chuck.
There is a set from Makita that is apparently still available, but it's pricy and small.
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I couldn't see any markings on my old ones to give any clues to the maker (or even the sizes). The ones that have survived are around 8mm, but I'm sure I also had them to drill clearance holes for M12 and I'm fairly sure I had tapping drills for M12 too.
all the sds drills i have you get rotary and rotary hammer . even if u got the sds chuck adapator they still wobble a bit
Speeds will be a bit off for drilling metal with an sds machine.
You could sharpen bits up etc or use adaptors, but it'll be harder work than itbshould be.
For an odd couple of holes in something when you already have it out, I'd say yeah, go for it.Tell me more…. My SDS goes up to 1,100rpm which is faster than the drill I’m using, and probably faster than required?
(I’m genuinely interested in your thoughts by the way).
For an odd couple of holes in something when you already have it out, I'd say yeah, go for it.
Some SDS machines run much slower rpms than yours.
So say a 4/5 mm bit, you're on the low side, but workable.
Say a 14mm bit, you're a bit fast. Yeah you can vary it a bit with the trigger I gather, but it's not like having a variable speed drill with a couple of gears too. Your running the drill under high load, but at slow speeds.
I used to see it all the time, builders struggling to drill holes in steel with sds adaptors, cordless drills.. using the right drill for the job makes things much easier.
This is where the drills with interchangeable chucks come in useful. I know at least Bosch & Metabo do them. A drill where you can fit either a SDS else standard chuck to it.
