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    Broken Center Drill Fix

    I've never went wrong with KEO. Some low-cost imports grind too much material away.
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    Broken Center Drill Fix

    I had about a dozen years experience as a machinist when I took a new job at a company that manufactured resistance welding equipment. Up to that point, the only copper I ever dealt with was from a beryllium copper foundry which machined similar to CF steel. Imagine my surprise and...
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    Harbor Freight 8'' Drill Press

    It can pay to watch craigslist and other local sources for used older American iron. Prices will vary wildly as most sellers pull a number out of a hat. If you can be patient, a deal on a nice older Rockwell/Delta, Walker-Turner, Sears, etc can be had. Most that were sold for home shops and...
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    Harbor Freight 8'' Drill Press

    Being mindful that many on this board are working with very limited space, I would suggest getting a floor model if possible. The bench models by their nature inundate the bench, any drawers and everything on it with chips posing a high ouch factor. The other bonus besides a lot of Z and the...
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    Bolt Circle Calculator

    Little machine Shop has a Reference page that has several calculators Including bolt circle, determining a bolt circle diameter from chordal measurements (very handy for odd-numbered bolt circles) and a change gear calculator for several of the mini lathes as well as one you can set up for ANY...
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    Free plans for a larger, simpler, beam engine

    I just type 25.4 into my scientific calculator, hit the reciprocal (1/x) button and store the result which is the constant that shown above carried out to more decimal places. After that, I type in the mm dimension x MR (memory recall) = and get the result which I round to the precision...
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    Shrink Rule

    It's an 11x36" Sheldon. I'm a little below Athens, a bit more than 1/2 way between Knoxville and Chattanooga.
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    Shrink Rule

    I have uploaded a PDF of a 1/8" per FT shrink rule with an explanation for its use to the downloads section. I am making a pattern for a T-Slotted slide for my lathe that I hope to get cast at one of the areas small iron foundries. I'm in no physical shape to be a sand crab so I can't see...
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    Shrink Rule, 1/8" per FT

    This is a 1/8" per ft shrink rule drawing. Print it on legal size stock, scaled 1:1. Be sure to check that the O/A length is 12-1/8" when printed. Most paper shrinks asymmetrically so check it before each use. An option would be to print the mirrored version on page 2 using clear stock. Then...
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    A Mini spot welder from scrap

    The mantra in spot welding is "squeeze, weld, hold, release". This is the differing amounts of time for a cylinder or other actuator to reach welding pressure, X cycles of weld current, time at pressure to allow the weld nugget to solidify and cylinder retraction. I could get into a lond...
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    A Mini spot welder from scrap

    Mark- I designed industrial automated spot welding equipment for about 20 years. You have an excellent grip on what is needed in a light-duty, intermittent use welder. For us a "small" welder started at around 20,000 amps capacity and went way up from there. The components and current...
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    Free plans for a larger, simpler, beam engine

    Excellent tip Oasanti. I'm new to the forum but have been in machining a long time and that is a new one for me. Thank you and your English is MUCH better than my Spanish! -Jerry
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    Hi from SE TN!

    Thanks to all! Gus- Opryland has been closed for quite a while. DollyWood in Pigeon Forge is a larger version, come visit! I like the fish in your avatar, makes me hungry! Mark- My impression is that model engines as a hobby has a much higher per capita following "across the pond" than...
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    Hi from SE TN!

    My name is Jerry and I ran across this site due to a Google search on gearing. I am in the process of redrawing some plans for an old shaper design when I found that GailInNM had already done something very similar to my plans and posted pictures here. I still plan to do that build but it is...
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    Brian builds Atkinson Engine

    Hi Brian- I just joined the group about a week ago and have been getting my feet wet. I have read all the posts in this build thread in one setting. Excellent all around. I hope to start making chips one an engine sometime next year. Still setting up my shop. I've ran a little SW & a lot...
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