Big drill bits

[ultrarunner]

Friend had a steel gusset project that needed about 100 1” holes in 3/8” plate. Another friend has an Iron Worker and it was quick work to punch the holes

 

[fatjay]

Old bucket/arms are 1.5" pins, new bucket is 1" holes. Suggestions on how to make them bigger?

 

[LD1]

There is no good way with an average home garage. Maybe I missed it but have you considered taking it to a machine shop?

Running a 1.5" bit down in a 1" hole with a hand drill is gonna be a nightmare. Gonna want to grab, bind and try to break your arm. And the bits dont like it either.

They are spendy to buy an arbor, but have you considered spade bits?

 

[fatjay]

There is no good way with an average home garage. Maybe I missed it but have you considered taking it to a machine shop?

Running a 1.5" bit down in a 1" hole with a hand drill is gonna be a nightmare. Gonna want to grab, bind and try to break your arm. And the bits dont like it either.

They are spendy to buy an arbor, but have you considered spade bits?

A spade bit for metal?

I've taken 1" to 1¼" with hand drill, it wasn't fun, but it got done. I don't know of a machine shop in the area, I have my steel supplier and wood supplier but they don't do anything like that.

 

[downsizingnow48]

Presumably the bucket with 1" holes has welded-on bushings that are about 1 1/2" OD? Or something like that. So boring the holes out would make the bushings thin or remove them entirely. If the bucket has those bushings, boring out is not going to work. In that case, I would cut out the old bushings with torch or plasma. Then weld in a new section that has the new bushing w/ 1 1/2 hole already welded onto it. Using the backhoe stick and a length of 1 1/2 round bar to keep everything reasonably straight.

 

[fatjay]

Presumably the bucket with 1" holes has welded-on bushings that are about 1 1/2" OD? Or something like that. So boring the holes out would make the bushings thin or remove them entirely. If the bucket has those bushings, boring out is not going to work. In that case, I would cut out the old bushings with torch or plasma. Then weld in a new section that has the new bushing w/ 1 1/2 hole already welded onto it. Using the backhoe stick and a length of 1 1/2 round bar to keep everything reasonably straight.

I don't know about the new bucket, but the old bucket has no bushings, it's just metal on metal with zerks. I do keep them well greased though.

 

[Tractor Seabee]

Get a 1/1/2" shaft coupling, the pin should fit inside nicely unless worn badly. Cut off pieces for each side. Burn out a hole to match the OD of the coupling and weld in the pieces for the pins. You may need to ream a little after welding as the coupling pieces will expand some. Rent the reamer at the auto parts store. Shaft couplings are forged or high strength steel and make good pin bushings. Re-looking at picture you may need to beef up the ears or make new pieces. Alignment is critical.

Ron

 

[BukitCase]

Agree with Downsizing and Ron; I got mine here

1-1/2 Shaft Coupler | Concentric International | Brands | www.surpluscenter.com

used 'em whole for parts of my loader QA setup (not finished yet) and sliced 'em into 3/4" thick weldable bushings for other parts (horizontal band saw)

Bent 1/2 x 3 FB "U" brackets into 1-1/2" ID for upper pin attach using my 20 ton press

The plan (when I get back to it) is to leave pins in all upper mount holes of implements (original bucket, grapple, fork lift, brush forks, brush bucket, 3ph adapter) so I can lift implement by the upper pins (in the hooks), then curl it up and insert lower pins.

If I get REALLY ambitious I may adapt the same plan to hoe buckets later... Steve

Also agree with making larger ears if necessary to get 1-1/2" holes without losing strength - my hoe has about 9400 lbs breakout, not a job for bungee cords...

 

[denchen]

If the bucket is designed to work with a one inch pin, it would be easier to temporary bush the inch and half holes than drill out the bucket

 

[tookielee]

Just use a 1" pin, and bushings where needed