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Old 11-02-2012, 10:32 PM
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Default Mag Drill = Portable Milling Machine

I had to enlarge some holes in a excavator bucket, and came up with a solution of making an boring bar for the mag drill. (Actually, I modified a boring bar I made for a previous job for the mill) The existing holes were 1 5/8" and I needed to make them 1.765 or 45mm.

First I had to clamp a 3/4" piece of plate to the bucket to hold the mag drill. Then I used a 1 5/8" rotobroach bit to center up on the hole, put the boring bar in and started boring. I had the cutter pretty well set for the cut, but did adjust a little after the first cut. The setup wasn't perfect and the holes were slightly mis-aligned with each other , but with a little air file work, I got the pins to slide in! The dirt will never know!
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  #2  
Old 11-02-2012, 10:40 PM
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Neat idea. Always interesting to see the creative solutions that others come up with. That's a brute of a mag drill, too...
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  #3  
Old 11-02-2012, 11:30 PM
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That is a great idea! Nice thinking.
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Old 11-02-2012, 11:52 PM
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The cut looks nice & shiny.
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Old 11-03-2012, 02:27 AM
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Glad it all worked out for you.

You do realize that your rig up is just a few doodads short of a "lineboring" setup, right? A couple pillow block bearings and a U joint drive shaft, and presto, a line boring rig....
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Old 11-03-2012, 05:17 AM
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I love you footless clamp. Great Idea!
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Old 11-03-2012, 07:12 AM
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Nice job.

Quote:
Originally Posted by J bar J View Post
I love you footless clamp. Great Idea!
McMaster Carr has replacement feet for C clamps.
http://www.mcmaster.com/#standard-c-clamps/=k02mma
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Old 11-03-2012, 07:24 AM
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Old 11-03-2012, 08:39 AM
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Great setup
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Old 11-03-2012, 08:55 AM
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Bit more work and you would be set up for lineboring, as was mentioned.

Bucket looks like a backhoe bucket, but maybe a smaller excavator bucket. I see it has the second set of holes for loading trucks and the like to get a little more 'curl'.
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