Thread: center hole drilling jig

Hi hillpanther ,

That is a very clever centre hole jig you have made there .
I like the video showing how it works . Good job .

Cheers Graham .

Nice video and a wonderful jig. Well done.

Very ingenious, I'd be getting a patent of some sort if I was you.

Thanx Graham,two40 and sjt for your kind words.you guys giving me motivation to use my skill.i promise i will never let you down.soon i will show you 100% of this jig but i m not a woodworker.my father was a mold maker in india and worked in england but he died young so couldn't learn his full skill.
myself working for koyo bearing in japan.on my free time i enjoy doing some woodworking or other craft work.i love to make wire puzzle,i think it also called tavern game and bring it to Bar and make bet with japanese guys and always enjoy free beer

That's brilliant

Definitely patent it.

Totaly agree its brililant

The idea is OK, but you have now made the drill press 'useless' for anything else, you will have to remove it from the drill press, for any other drilling purposes that you require.

Possibly would work OK in a situation that required thousands of holes to be drilled in thousands of bits of timber in multiples of different lengths, where this ONE hole had to be EXACTLY DEAD CENTRE of each bit of timber.
Most businesses would/do/can pre cut to length all the pieces required, then set up a vice in the drill press and use a stop for the length, then drill all the appropriate holes where they have to be drilled.
At each different length, the stop would be changed.
Each piece could/would/can be changed out of the chuck, far quicker than what it takes you to change and centre a piece, by trying to move that arrangement you have designed.

As an exercise in making something, yes, you have succeeded, but in all practicality, you have missed the mark.

I am speaking as somebody who has had to do the boring tasks at the lowest levels, it is far quicker to use the vice, than that arrangement you have made would ever be.

As for a home shop worker needing one, well, I for one, would not need it as most of the drilling I do, is a one of type application.
Maybe somebody here would/could/might need this for a job, but I for one, can never see it being used in any real situation.

i don't know what do you mean by i made drill press useless.it will take only less then one minute to remove and again put on when needed.actually i don't specially mean to make it.i have just some extra part of my hybrid pantorouter and extra MDF board which i use.well this thing was just an idea but if you will use little bit extra brain you can make it from small parts and use it as handheld reither than fit on borad or using drill press.then it can work as dowel jig,tenon and mortise marker and ofcourse center finder as well.

i m not a dedicated woodworker so don't have really time to make dedicated jig but i use this idea on my hybrid pantorouter and will upload a new video how this idea works.

The wood turners here would be very interested in this concept. Drilling holes in the centre of square, rectangular and already round sections to take a screw chuck is very common and even with a jig involves marking, alignment then drilling.

Good job and thanks for sharing. The great thing about these forums is taking ideas from one place to another and building on each others work.

mardtrp, don't bother attempting to correct the above by pointing out that squares are just a special kind of rectangle blah blah blah.
A quick review of your small number of posts clearly shows a condescending attitude that does not help anyone, nor does it make you appear superior.

i just made from same mechanism mortise and tenon marking gauge please have a look and put your comments
[ame="http://www.youtube.com/watch?v=tWe4IbZXIys&feature=g-upl"]mortise and tenon marking gauge - YouTube[/ame]

Great idea HP.
I can see that arrangement being very handy if you have a lot of tennons to mark.
Make the centre pieces the same size as your mortising chisels.