Type of pillar drill...

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Boo2

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...that you can press on a surface and drill down through it at 90 degrees ?

I've read about a type of pillar drill as above on these forums but can't find out anything about them. Can anyone tell me what they are called and where they can be found ?

Thanks,

Boo2
 
I've heard of such a thing with a magnetic base for drilling through steel. You slap the whole drill onto the metal workpiece and then start it going, expecting it to take hours to get through inches of plate. I think "breaching drill" is the term.

Pete
 
prv said:
I've heard of such a thing with a magnetic base for drilling through steel. You slap the whole drill onto the metal workpiece and then start it going, expecting it to take hours to get through inches of plate. I think "breaching drill" is the term.

Pete
Click to expand...
Magnetic broaching drill.
They are bigger than you think and are often a two man job or at least a chainblock. Lovely incident with one of these in Rosyth Dockyard. One guy was lining up the drill bit at shoulder height whilst the other worked the chain block and pressed the magnetise button. The first man was holding the inch diameter bit and lined it up with the pilot hole, he shouted for his mate to magnetise but the boy hit the start button by mistake. The bit grabbed his glove and ripped his middle finger clean off. Apparently there was about a metre of tendon hanging out? Not really a hobbyists toy.
 
Boo2 said:
...that you can press on a surface and drill down through it at 90 degrees ?

I've read about a type of pillar drill as above on these forums but can't find out anything about them. Can anyone tell me what they are called and where they can be found ?

Thanks,

Boo2
Click to expand...

Do you mean a portable drill guide, like this one http://www.axminster.co.uk/axminster-axminster-drill-guide-prod22269/ if so take care to get one that fits the collar on your drill, even asuming your drill has a collar.

This one is more expensive but can be used with any drill. http://www.amazon.co.uk/General-Tools-Precision-Drill-Guide/dp/B00004T82L
 
Last edited:
Often referred to these days as mag drills, machines vary in size according to the size of hole you want to drill, you can get pretty cheap small ones. They normally use hole cutters rather than drill bits, ranging from 10mm up to about 70-80mm.

Every one that I've ever used requires the magnet to be switched on before the drill will start which would prevent the accident mentioned above from happening.
 
I have that exact model and it is very good and well made, only problem, as I mentioned earlier is that it only works with one of my Bosch mains drills and none of my cordless drills fit it as they don't have a parallel colar.
 
One of my clients used a stand for his diamond cutting drills in awkward situations.



DiamondDrilling.jpg
 
I've certainly used an (old) single phase magnetic drill press lots of times in the past. I typically drilled 10-13mm holes in 3/4" thick plate. Worked extremely well and was very safe - even on vertical surfaces.
 
Avocet said:
I've certainly used an (old) single phase magnetic drill press lots of times in the past. I typically drilled 10-13mm holes in 3/4" thick plate. Worked extremely well and was very safe - even on vertical surfaces.
Click to expand...

yep good machines, till some silly booger unplugs your lead
 
Mag drills sometimes called Limpet drills. Sometimes used by steam engine boiler makers for drilling out stays when replacing fireboxes. Far quicker them manual ratchet drills!!!! Don't ask how I know!!!!
 
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