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Tool Tip #35: Aldi Step drill sets

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Blog entry by robscastle posted 12-11-2018 04:39 AM 926 reads 0 times favorited 14 comments Add to Favorites Watch
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OK here is something I would not have normally considered.
Using a step drill in wood.
These are usually reserved for thin metal and plastics, however I decided to do a test and see if they were suitable for solid and engineered wood.

First up the Purchase details.

I bought 2 x sets of drills from ALDI. Now the picture shows both sets together in one box so dont be confused.
The cost was $12AUD each.

Now the technical details.

Each individual set had the following contents:-

Set 1
Set 1 had 4 x Drills 1x Countersunk bit 12.4mm 1x Drill saw bit 6mm 1 x tapered cone drill 8 to 20mm and 1 x step drill 4 to 12mm .

Set 2
Set 2 had 3x drills, 1 x step drill 4 to 12mm (same as set 1) 1×4 to 20mm step drill and 1×4 to 32mm step drill.

All were coated with the usual gold looking Titanium aluminium nitride (TiAlN) or aluminium titanium nitride
and all had 3 sided or hex shafts. So 5 of the set (hex) can fit into a standard hex driver adapter.

I only used the 4 to 20mm stepped bit for the test.

First test was a piece of MDF board.

I can report the bit ate it no worries.

The resultant hole.

So I turned the board around and drilled back in again.

All seemed a reasonable job with only a bit of raggedy edges showing.

Next I turned my attention to a piece of pine.

As you can see it ate it again.

Now from the other side drilling back.


Conclusion:

If you have a situation where a bigger drill is needed and you dont have one, a step drill could be used.

Note:
As the step section is small there will be a decresing dimension if material thicker than the step is used, otherwise move the shank out and pass completetly through.
Does it work with hardwood (Red Ironbark) I havent tried it yet.

And its BOC! For what its worth enjoy.

-- Regards Rob



14 comments so far

View degoose's profile

degoose

7245 posts in 3592 days


#1 posted 12-11-2018 04:41 AM

Interesting

-- Don't drink and use power tools @ lasercreationsbylarry.com.au

View robscastle's profile

robscastle

5631 posts in 2442 days


#2 posted 12-11-2018 04:50 AM

Or for those currently overseas its BBOC!

-- Regards Rob

View anthm27's profile

anthm27

534 posts in 1348 days


#3 posted 12-11-2018 04:56 AM

Interesting,
I’ve never owned or used a step drill, really didn’t know anything about them.
I’ve had a few Bintangs though.
Enjoy
cheers

View robscastle's profile

robscastle

5631 posts in 2442 days


#4 posted 12-11-2018 05:23 AM

OK not forgetting other areas of the globe.

ack Murray !

If you think you WW skills are lacking get 1/2 a doz or so of these into you … then read Degooses post sub script!

-- Regards Rob

View crowie's profile

crowie

2812 posts in 2189 days


#5 posted 12-11-2018 06:28 AM

Rob, I’ve used step-drills to enlarger holes for a while now but only on aussie hardwoods….
Taking a 1/4” hole to either 5/16” or 3/8” for toy axles and my experience has been great using the step-drills as a starter for a through hole drilled with the required size….

-- Lifes good, Enjoy each new day...... Cheers from "On Top DownUnder" Crowie

View robscastle's profile

robscastle

5631 posts in 2442 days


#6 posted 12-11-2018 07:11 AM

OK ! so there you go eh! I thought it was something that had a benefit to others, ... and with your experienced input Pete some practical applications as well. Thanks for the reply.

-- Regards Rob

View pottz's profile

pottz

3826 posts in 1222 days


#7 posted 12-11-2018 03:05 PM

ive used step drills for years making holes in metal larger but never thought of using on wood,dont know what i would need them for,but ill keep it in mind.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

View LittleBlackDuck's profile

LittleBlackDuck

2120 posts in 1058 days


#8 posted 12-11-2018 09:42 PM

I’ve used a step (ladder) to drill, even stepped on a drill (and turned my ankle… even though we’re not talking about lathes), but $12.00 each, make Mr. Bunnings look like a rip off merchant.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View robscastle's profile

robscastle

5631 posts in 2442 days


#9 posted 12-12-2018 05:35 AM

OK closer to home.

When I walked up the ladder to RMS Titanic I never made it onboard! I was turned away but luckly I didnt twist my ankle on the way back down.

-- Regards Rob

View LittleBlackDuck's profile

LittleBlackDuck

2120 posts in 1058 days


#10 posted 12-12-2018 07:42 AM


... I never made it onboard! I was turned away…
- robscastle

Maybe it had something to do with the eye patch, parrot on shoulder and BS (Blunder busS) in your hands, though the peg leg might have kept you afloat and did prevented one twisted ankle.

Hope you bought the parrot a bag of seed as a reward…

-- If your first cut is too short... Take the second cut from the longer end... LBD

View robscastle's profile

robscastle

5631 posts in 2442 days


#11 posted 12-12-2018 08:33 AM

Ahrrrrrrrrrrrrrrrrrrrrrrrrrrr

-- Regards Rob

View stefang's profile

stefang

16209 posts in 3572 days


#12 posted 12-12-2018 02:41 PM

Good test Rob. There is a step drill suitable for drilling holes in Chinese balls, but they are very expensive!

-- Mike, an American living in Norway.

View LittleBlackDuck's profile

LittleBlackDuck

2120 posts in 1058 days


#13 posted 12-12-2018 10:45 PM



... in Chinese balls, but they are very expensive!...
- stefang

Not wanting to sound racist… but mine are priceless and ther’s no way anyone is going to drill mine!

-- If your first cut is too short... Take the second cut from the longer end... LBD

View Joe Lyddon's profile

Joe Lyddon

10369 posts in 4290 days


#14 posted 12-14-2018 06:55 AM

Yes, very interesting…

IMHO, a brad-point bit will always do an excellent job… My GO TO Bit of choice… unless a Forstner can do it better.

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

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