Big drill bits

[MF RED in MT]

My HF drill press didn't scratch them. Slow, fast, oiled, didn't matter, it was not able to provide the torque on the slowest setting with the belt as tight as I could get it.

This is 3 pieces of 3/8" steel that I used for building my pallet forks for my bobcat. It took 40 minutes to get through like this: http://i.imgur.com/pQRDLoy.mp4

With my HF cheap drill press, I can drill a 3/8" thick plate on the slowest belt settings, and can drill a 1 1/2" hole using a Milwaukee metal hole saw in about 5 minutes using "WestLube" lubricant and keeping the shavings cleaned out of the hole.

In your video, if your drill does not have a slower speed and you are slowing the speed down with pressure pushing down, looks to me that you need to readjust your process, just a thought...

Also, with my drill press I can keep adding the lubricant while drilling the hole, and the HF cheap drill press forces me to use medium to light down pressure (does not create a lot of heat).

I would also only drill through all 3/8" plates with a 1/4" drill at once, and then drill each 3/8" plates separately with the hole saw.

Good luck, KC

 

[Industrial Toys]

A friend just bought an iron worker for more than some people pay for a house. Same guy who got my Hougen. I'm just helping him put a laser target on it. He showed me something like a 1" hole slug from 1" material. AMAZING!

 

[ultrarunner]

^^^ Seeing made me a believer... just put out slug after slug.

 

[LD1]

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.

Yes, but not your typical spade bits for wood

https://www.mscdirect.com/browse/tn...ng-Inserts/Spade-Drill-Inserts?navid=12107190

 

[BukitCase]

Interesting inserts LD, got a link for the tool they fit? MSC's no help... Steve

(BTW, don't think I'd wanna free-hand it :=)

 

[ArlyA]

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

I am interested to see or hear how this is done.

 

[LD1]

Interesting inserts LD, got a link for the tool they fit? MSC's no help... Steve

(BTW, don't think I'd wanna free-hand it :=)

No I dont have any links. I dont actually have a set of spade bits, but several places I have worked always had them. We only ever had to order replacement inserts, never an arbor. So????

 

[guitarman]

I am interested to see or hear how this is done.

can you use a bushing in arm ?