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View Full Version : Drill Guide...3/4 " axle (for 1/4 " drill bit)



edspedalcars
06-10-2013, 07:27 PM
Trying to maintain perpendicular and centered holes can be a challenge.

My simple answer is below:

Not a new idea, just bringing it to new life.

First I cut a 2 inch piece off a handlebar tube.
http://s12.postimg.org/xyiiogy71/drill_guide_and_wheel_removal_005.jpg

Cleaning up inside so it will slip onto the axle freely.
http://s9.postimg.org/6hp7giv73/drill_guide_and_wheel_removal_007.jpg
http://s16.postimg.org/jdza3nuph/drill_guide_and_wheel_removal_008.jpg

Pressing the 5/16 x 18 nuts into each end of a 5/8 " O/D tube. (Cut from donor BMX bike)
Be sure to file off the 'points', slightly, on each nut before pressing into the tube.
http://s17.postimg.org/5uy5jwxyn/drill_guide_and_wheel_removal_009.jpg

Top and bottom 'guide nuts', pressed into place.
Shown with 1/4 " drill bit in place.
http://s9.postimg.org/7182v0qr3/drill_guide_and_wheel_removal_010.jpg

With the axle in place (to prevent bending tube), I center punched for the lock nut hole.
I used a 1/8 " drill for a pilot hole, then used a 5/16 " drill bit to enlarge the hole.

I drill my holes 3/8" from the ends.

Same procedure for the vertical guide hole.

(NOTE) I will drill the bottom hole, for the drill bit guide last, so that I can use the guide to make sure the holes are in line with each other.

http://s15.postimg.org/eijhnwlzv/drill_guide_and_wheel_removal_011.jpg

I used the eye bolt to ensure the two nuts were inline with each other,
and as a guide for perpendicular/square.
Yes, I used one of my, "Not so accurate squares".

Set up for tack welding of guide post.
http://s21.postimg.org/oe09hr3zb/drill_guide_and_wheel_removal_014.jpg
http://s18.postimg.org/rh9eehq7t/drill_guide_and_wheel_removal_015.jpg

Finished parts waiting to be welded.

http://s21.postimg.org/u43gyrt2f/drill_guide_and_wheel_removal_016.jpg

I had thought of using, JB Weld, here, as there is little to no stress on these parts.
Decided in favor of tack welding, purely for experience.

It's way too windy today, so can't weld or grind. I hope to weld this up in the morning.

Enjoy, Ed

Ticktock
06-10-2013, 09:31 PM
Neat and simple, no machining, and accurate enough for the job
So in use I assume the order of events is that you position the guide on the axle, clamp it, drill through axle, remove guide. If you are making your own collars or adaptors, I would then drill one side of the collar as true as possible, then place on axle, ,run drill through hole in collar, into hole in axle, then drill other side of collar. If using ready made and drilled collar, just pass drill though to clean up the boles for the bolt. I would still mark axle and collar to show which way it was made, as the chances of fitting both way is slim.
Good one .
Steve G
Recommended for all wearers of Bifocal Glasses!! Real name for these is "bending glasses" --mine can bend a 3 inch steel bar just by moving my head!

Radical Brad
06-10-2013, 09:59 PM
Nicely done, thanks for sharing!

Brad

edspedalcars
06-10-2013, 10:03 PM
Hi Steve

I've just come back in from my shop, after making new longer vertical guide post.

This being a purpose built jig, I had enough travel left on the drill bit to extend the post,
another 1/2 ", making it 1 1/2" long.

The extra length takes out a little more slop, giving yet a straighter drill line.

Also put together a lock nut, 'wing nut'.

If this works OK, I will make another one for use on a 5/8 " axle.

Hadn't thought about any other uses. Just for drilling the retaining bolt holes for my hubs.

Enjoy, Ed

edspedalcars
06-10-2013, 10:17 PM
Thanks Brad

Appreciate the feedback

Ed

edspedalcars
06-11-2013, 02:33 PM
Got out early, no wind. Great for welding, grinding, and painting.

All 'tacked up and no place to go' !!

http://s23.postimg.org/cjeorazcr/004.jpg

Dressed in formal attire, ( left over Metal Specks Red ), and ready to join the 'Drill Team' !

http://s16.postimg.org/3z52nxf45/007.jpg

Enjoy, Ed

Ibedayank
06-11-2013, 08:19 PM
how do you use this jig when you drill a pilot hole as a 1/4 bit is pretty big to drill a hole in 1 shot?

edspedalcars
06-11-2013, 08:33 PM
Ibedayank

Not sure which drilling operation you may be referring to?

The pilot hole was for predrilling the holes for the guide post and lock nut holes.

Nothing to do with drilling through the axle.

Haven't 'used' it to drill anything, as the paint is still 'green'.
It's actually red, but you know what I mean, LAL

Ed

Ibedayank
06-12-2013, 12:14 AM
Ibedayank

Not sure which drilling operation you may be referring to?

The pilot hole was for predrilling the holes for the guide post and lock nut holes.

Nothing to do with drilling through the axle.

Haven't 'used' it to drill anything, as the paint is still 'green'.
It's actually red, but you know what I mean, LAL

Ed

you mean you don't start with a small bit and work up to the size you want?
I know I do and my bits stay sharper longer

edspedalcars
06-12-2013, 01:03 AM
you mean you don't start with a small bit and work up to the size you want?
I know I do and my bits stay sharper longer

How coincidental

I was just going to look for some type of bit sharper, but thought I'd read my mail first.

No, for most drilling I use my drill press, so I can control the speed and pressure better.
Not saying thats the way to do it, just how I've been doing it.

Someone posted awhile back about having trouble with drilling axle holes. I had been thinking
about the same thing. So I looked up alot of different types and figured I would have a go at
making one.

Any other suggestions are welcomed.

Ed

edspedalcars
06-12-2013, 12:27 PM
Ibedayank

As you raised the question of using pilot holes, I figured, why not delve into
how to use and sharpen drill bits.

I am converting from woodworking, to PVC working, now to metal working.
Most of my drilling needs has, until recently, been in wood or aluminum.

So , as I'm working with primarily up to 1/8th and occasionally, 3/16-1/4, I would try to learn more.

I did say I used a 1/8th pilot hole for the guide tube and lock nut holes.

If you are suggesting a pilot hole for the 1/4" axle hole, then I will need another guide for that.
(Actually, I will probably use my drill press for my axle)

My collection of drill bits goes up to 1/2 ".

Because I'm now needing larger holes sometimes, (3/4 to 7/8), I am trying the step drills from HF.
I like the process but will probably look into better bits. And obviously they are for thin metal applications.

Also watched a video on drill bit anatomy. Good to KNOW, your tools.

A person may see a need for a pilot hole. An 'informed' person now know's the anatomy of the drill bit,
and how the pilot hole interacts on the drill bit, or vice versa.

Also knowing the types of drill bit ends, has helped to understand,
what is actually happening under various drilling operations.

In particular what's actually causing the overheating, (bit anatomy again) and what to do about it.

All I wanted to do was make a drill guide and I'm furthering MY education.

You are to blame for that and I suppose I should say thank you.

Thank you, Ibedayank

Enjoy, Ed

edspedalcars
06-13-2013, 03:29 PM
Test drilling with new jig

First I drilled, a 'eye line' , pilot hole, with a 1/8th drill bit.

Probably could use a jig for the pilot hole as well, but I had no trouble keeping it straight....ish.
I figured the 1/4 " bit would still cut a straight path through.

Then I positioned the jig and inserted the 1/4 " drill bit to find center over the 1/8 " hole.
After finding center, I secured the jig with the wing nut.

Next I secured the 1/4 " drill bit into the drill and drilled the hole.

http://s8.postimg.org/f34y9q5f9/drill_guide_1st_hole_001.jpg
http://s23.postimg.org/3vek49ckr/drill_guide_1st_hole_002.jpg

It would appear that my little experiment has worked.
Not the same as using the power and speed of the drill press, but quite doable.

http://s22.postimg.org/6ra0u32dt/drill_guide_1st_hole_005.jpg

Enjoy, Ed

fluxican
07-14-2013, 09:38 PM
excellent thread, thanks ed

edspedalcars
07-15-2013, 05:20 PM
Drill Guide Modification

This post is dedicated to, Ibedayank', who's questioning, caused me to pause, to examine how I have been using my drill bits, and how I should answer his questions. (i.e. how do you use this jig when you drill a pilot hole as a 1/4 bit is pretty big to drill a hole in 1 shot?

It also caused me to educated myself, somewhat about, the complexities of such a simple thing, as a drill bit.

Learning the 'anatomy' of a drill bit, has helped me to understand what is happening, (or not happening), during the drilling process.
Never looked at the end of a drill bit,(unless it was for wood), so never knew about that 'little' flat spot and how much trouble, not knowing could cause.

Thanks for your question, Ibedayank ! http://forum.atomiczombie.com/images/smilies/smile.gif

I also made a small modification to the drill guide, and tried it out.
Tried it with a 1/8" bit, no center punch, while the hole in the guide held the pilot drill bit in place until it started cutting.
No real advantage maybe, except being able to drill in an awkward position.

http://imageshack.us/scaled/medium/18/h4yf.jpg

Oh ! Yeah !, then there's the issue of the broken, drill bit, Mr Ibedayank ! I'm sure there's another lesson, in that too !

It's all fun http://forum.atomiczombie.com/images/smilies/smile.gif

Enjoy
Ed

Ibedayank
07-17-2013, 12:40 PM
Ed wait till you break the flutes off a 5/8s drillbit!! That one hurt as the drill kept spinning.
I have been using double ended 1/8 bits as the flutes are short so keeps the breaking of bits down.
Hard to bind a bit when its just a smooth shaft.
I always oil bits and holesaws when drilling it keeps them cooling and they stay sharper longer.

Motoroil in a squirt can is cheap and most already keep extra oil in the shop.

edspedalcars
07-17-2013, 02:44 PM
Ed wait till you break the flutes off a 5/8s drillbit!! That one hurt as the drill kept spinning.
I have been using double ended 1/8 bits as the flutes are short so keeps the breaking of bits down.
Hard to bind a bit when its just a smooth shaft.
I always oil bits and holesaws when drilling it keeps them cooling and they stay sharper longer.

Motoroil in a squirt can is cheap and most already keep extra oil in the shop.

Was that 'hurt' in pride or personal injury?
I broke my 1/8" just from moving slightly to much to one side and, "SNAP!!'.

Hadn't thought about double ended drill bits, but will now be looking to where and how much they are locally.
Seems like a logical thing to do, especially with the small bits.

Thanks for the thought, on that.

Ed

Ibedayank
07-17-2013, 08:31 PM
1/2 chuck 2 hander drill... lucky I did not break bones in a arm
most likely would have if it did not break the bit first

edspedalcars
07-17-2013, 08:48 PM
1/2 chuck 2 hander drill... lucky I did not break bones in a arm
most likely would have if it did not break the bit first

I can visualize. That took some torque!

I've had that happen to me, but on a much less severity, and nothing broke.

Your experience is a lesson for the rest of us.

Glad you didn't get hurt

Ed