6 Piece Set. ¼" hex shank, self-cut flat wood drill bits with self-feeding, precision-ground tips and cutting edges for accurate dimensional stability. 3 x faster drilling than standard spade bits. Ideal for use with cordless drills and drivers. Supplied in convenient wallet.
Self-Feeding Threaded Tip
Precision-Ground for Accuracy & Stability
3 x Faster than Standard Spade Bits
Suitable for Soft & Hard Woods
Plasterboards & Light Building Materials
View more information
Product contents:
13, 16, 19, 20, 22 and 25mm.Specifications:
Width: 83mm. ¼" Hex shank.
14 comments
othen
10 Mar 161#1
Well done again pennyfarthing88, by chance I need some wood bits.
Alan
androidavis
10 Mar 16#2
Would this be suitable for drilling into car dash and trim plastic or would that leave a too rough a hole? Wanting to install an extra accessory power socket in the dash and in the boot area.
GoNz017 to androidavis
10 Mar 161#4
You could but you would need to drill a pilot hole to stop the threaded tip working as it will pull it through and damage the dash, you need to go at it slowly. these eat through wood compared to normal wood bits.
Well, depending on the size of the hole and the thickness of the plastic it might well work. These bits have the self-centering type leads, which would be an advantage with plastic. Put a piece of tape over the place where you want the hole first, then use the slowest speed you can in your drill (battery powered drill is probably best, they tend to be more sensitive to the trigger) and advance the drill bit nice and slowly. As long as the plastic isn't too thin I think it would work fine, perhaps you could try a trial hole on a bit of the same trim that doesn't show?
For a better solution you could use a hole saw: a bit more expensive and you would only ever use it once.
I'd be tempted to try this (on a bit that does't show - maybe in the boot) first, I think it will work.
Be brave.
sradmad
10 Mar 161#3
Nice find PF, great price, heat added :smiley:
profdarkart
10 Mar 161#5
good deal, accidentally voted cold and can't undo :disappointed: sorry.
I wouldn't be risking my dash to save a couple of quid. Buy the correct tool for the job.
themachman
10 Mar 162#11
Penny stop posting all these tool/DIY deals!My other half has got me doing all sorts of jobs here haha :wink:
androidavis
11 Mar 16#12
Thanks very much. I've been reading the comments carefully and appreciate advice.
I am happy to spend the £4 on the arbor and £4 on the holesaw if its a safer bet.
Before I do, would a step drill bit be worth considering over a hole saw? Appreciate you guys sharing your thoughts on this
Rhys1979
11 Mar 161#13
Step drills are good, as long as:
a) on of the 'steps' matches the diameter you need
b) you ensure you don't take it a step too far
If you are going to drill multiple holes the same size I would get a holesaw. If you are only going to use it once, or you have to drill multiple holes of multiple sizes (and can't/won't stretch to a holesaw kit) go for careful use of the step drill.
androidavis to Rhys1979
11 Mar 16#14
You are a star - many thanks. I think it is a step drill.
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Opening post
Were £13.49 a set.
Great reviews.
Could be useful for some...
6 Piece Set. ¼" hex shank, self-cut flat wood drill bits with self-feeding, precision-ground tips and cutting edges for accurate dimensional stability. 3 x faster drilling than standard spade bits. Ideal for use with cordless drills and drivers. Supplied in convenient wallet.
Self-Feeding Threaded Tip
Precision-Ground for Accuracy & Stability
3 x Faster than Standard Spade Bits
Suitable for Soft & Hard Woods
Plasterboards & Light Building Materials
View more information
Product contents:
13, 16, 19, 20, 22 and 25mm.Specifications:
Width: 83mm. ¼" Hex shank.
14 comments
Alan
http://www.screwfix.com/p/erbauer-electricians-holesaw-kit-9-pieces/76952
In my opinion the flat wood bits are much more likely to damage the surrounding plastic.
For a better solution you could use a hole saw: a bit more expensive and you would only ever use it once.
I'd be tempted to try this (on a bit that does't show - maybe in the boot) first, I think it will work.
Be brave.
http://www.screwfix.com/p/erbauer-bi-metal-holesaw-25mm/44422
http://www.screwfix.com/p/erbauer-9-5mm-holesaw-arbor-14-30mm/7518h
I wouldn't be risking my dash to save a couple of quid. Buy the correct tool for the job.
I am happy to spend the £4 on the arbor and £4 on the holesaw if its a safer bet.
Before I do, would a step drill bit be worth considering over a hole saw? Appreciate you guys sharing your thoughts on this
a) on of the 'steps' matches the diameter you need
b) you ensure you don't take it a step too far
If you are going to drill multiple holes the same size I would get a holesaw. If you are only going to use it once, or you have to drill multiple holes of multiple sizes (and can't/won't stretch to a holesaw kit) go for careful use of the step drill.