Adding a DRO to a Mag drill?

[drummerdimitri]

Would it be possible to attach a DRO magnetically to my magnetic drill so that I can drill blind holes with some level of accuracy?

Even a spring loaded depth gauge that would allow for at least 10 mm of travel would be sufficient for my needs.

If so, how would it be mounted as I have no experience with those and would I also be able to use it on a drill press?

 

[lis2323]

Would it be possible to attach a DRO magnetically to my magnetic drill so that I can drill blind holes with some level of accuracy?

Even a spring loaded depth gauge that would allow for at least 10 mm of travel would be sufficient for my needs.

If so, how would it be mounted as I have no experience with those and would I also be able to use it on a drill press?

How would you remove the material on a blind hole?


Sent from my iPad using Tapatalk

 

[tool_scrounge]

Would it be possible to attach a DRO magnetically to my magnetic drill so that I can drill blind holes with some level of accuracy?

Even a spring loaded depth gauge that would allow for at least 10 mm of travel would be sufficient for my needs.

If so, how would it be mounted as I have no experience with those and would I also be able to use it on a drill press?

Which mag drill are you using?

 

[drummerdimitri]

How would you remove the material on a blind hole?


Sent from my iPad using Tapatalk

With a twist drill of course

 

[drummerdimitri]

Which mag drill are you using?

Fein KBM 50 auto

 

[lis2323]

With a twist drill of course

Haha. Sorry. I assumed you were using annular cutters. My bad. [emoji849]


Sent from my iPad using Tapatalk

 

[speed bump]

I'm going to assume you are doing this will twist drills. If so I would buy or make some drill stops. In a pinch I wrap tape around the bit where I want it to stop.

https://www.mscdirect.com/browse/tn...ll-Bit-Accessories/Drill-Stops?navid=12106173

 

[Bigblue&Goldie]

Maybe rig something up like the Mitutoyo kit that goes on the quill of a Bridgeport.

 

[PT Doc]

What is the purpose of the blind holes?

 

[toolchaser]

Just put a drill stop collar on the bit, plenty accurate for the application

 

[tool_scrounge]

Picture of drill for reference

 

[drummerdimitri]

Just put a drill stop collar on the bit, plenty accurate for the application

I don't like to fiddle with those things and risk damaging my drill bits. More of a hassle than it's worth.

I'm thinking of getting myself a plunger dial indicator and 3D print a bracket for it to be mounted on the shaft of the mag drill as its body is completely non-magnetic except for the magnetic base (duh).

Not sure if those can be zeroed out but at least It would be a quick and easy way to see how far the drill has travelled into the material.

 

[zkling]

Look up drill press digital depth gauge. My quick choice would be a long enough travel indicator on a mighty mag base.

 

[LJZ]

Would it be possible to attach a DRO magnetically to my magnetic drill so that I can drill blind holes with some level of accuracy?

Even a spring loaded depth gauge that would allow for at least 10 mm of travel would be sufficient for my needs.

If so, how would it be mounted as I have no experience with those and would I also be able to use it on a drill press?

Hello So what level of accuracy? I assume by what you say your looking for a solid reliable stop. A set and forget setup to not have to worry about a woopsie and not break through or to get a correct drill depth?

Looking at the drill what if you just secured a step block or machinist jack to base to stop ram movement for a quick and dirty. Or spend a little time fabbing up a bar to go behind jibs. and secure a block in front of jibs with a fastener. Could get a little fancier by putting another screw into stop block (parrallel to motion) have a quick adjust.
If the operator is reasonably skilled you can do quite well just using a sharpie mark on a clean drill. reapplying as needed.
https://hammertools.de/fein-kbm-50-auto-50-60hz-220-230v-72704200230-ersatzteile

Nice drill by the way.

 

[sk farmer]

I don't like to fiddle with those things and risk damaging my drill bits. More of a hassle than it's worth.

I'm thinking of getting myself a plunger dial indicator and 3D print a bracket for it to be mounted on the shaft of the mag drill as its body is completely non-magnetic except for the magnetic base (duh).

Not sure if those can be zeroed out but at least It would be a quick and easy way to see how far the drill has travelled into the material.

in the first sentence you say you don't like to fiddle with things because of the hassle. in the second you are going to get a dial indicator and and print a bracket.

seems like designing and fabbing up a plastic bracket is a lot of fiddling around and hassle to make a fragile bracket using a fragile dial indicator for a tool that sees some fairly rough use.

as a side note. i have an evolution mag drill and if i recall it has scale and indicator. not super precise but it does work.

 

[seber]

Clamp collars are quick and will not damage the bit.

 

[lis2323]

Clamp collars are quick and will not damage the bit.

That is what I usually do [emoji106]


Sent from my iPhone using Tapatalk

 

[rpcraft]

I can't speak for all but a lot of mag drills have a meausrement scale on the side. Pretty easy to just pay attention to how deep you are drilling and if you need to physically limit it just use a collar stop. No sense making it more complicated than it has to be. A magnetic device can get moved, readings can be misread, but a collar stop, if applied properly, will give you a physical limit, which is far more reliable than instruments that can be moved or affected my dynamic elements, especially when placed right next to an electromagnet. Just my .02 $

 

[drummerdimitri]

I didn't pay attention to the measuring scale on the base of the handle that has 1 mm graduations so that's precision enough for my needs and will not be needing a fancy setup as stated above.

That being said, I do also have a drill press that could benefit from a DRO but I haven't required it yet so will cross that bridge when I get to it.

 

[matt_i]

I'm amazed that with such a nice drill there's no stop-rod.

The problem with a dial indicator is its a fragile thing, get a 2" or 3" and its a super fragile thing. Not sure even what they cost now? Maybe there are cheapies but a name that you recognize is going to be $300+ for a 3" indicator.

There are cheapie sliding scale DROs on ebay as I recall, but then its about mounting the saddle somehow and getting it aligned with the sliding way of the tool, and/or engineering the brackets with the right number of degrees of freedom so it can slightly self-align. Usually sheetmetal works well as it can be fairly rigid one direction and then springy in the other.

I like the idea of cutting a simple stop block with a mitersaw out of wood. Should be able to do that to 1/32" or 1mm precision without a lot of work.

What's the app (need) for precision hole depth?