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  1. L

    INNEngine

    I know some of us are always looking for a new and unusual challenge. I also know that some of us are very good at CAD design and some of us aren't (me :oops: ). We just want to make piles of metal chips. Take a look at this "new" idea for an engine, especially the animated model. Apparently...
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    Drilling Very Small Holes

    I'm kind of liking the way these work and maybe I'll have to expand my collection of sizes in the future. I was lucky enough to catch a sale from Suncoast when I went looking. I've bought other tooling from them and it has all been very good. Every once in a while they have a free shipping...
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    Drilling Very Small Holes

    Interesting comments from all you folks. It's always fun learning how other people do unusual things. I do believe my problem is solved. The company I bought the micro drill chuck from has offered to take it back and refund my money. I ordered, and received, an ER11 chuck and collets from 0.5...
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    Drilling Very Small Holes

    len1042, I splurged on a 1/2" Albrecht chuck a few years ago and it is a dream to use. This little one was just over $100 and I was expecting similar quality. Just got a dose of disappointment instead. Using pliers on (what was supposed to be) a precision tool just doesn't sit right with me...
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    Drilling Very Small Holes

    I stand here with my tail between my legs after reading some of these responses. My idea of "very small" drill bits is #50 and it sounds like you folks look at those as monsters. I looked at the 1/8" shank micro drills in the post by kiwi2 and that is really small. I have gone down into the #70...
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    Drilling Very Small Holes

    My question is: What is the best way to hold (very) small drill bits when drilling? I had been using an old sensitive drill feed device with a miniature Jacobs chuck. It will close down to 0" and hold up to 1/8" bits. It is worn out and has developed way too much wobble (it was a "pre-owned"...
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    For Sale Brass Skeleton Clock kit

    Joe, I only mentioned it because it has worked for me at times. I'm sorry to hear that there is more to your condition. I've wondered many times how long my 70 year old body will be able to keep up with my 30 year old mind - and then there are the days when it seems like a 90 year old mind. Take...
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    For Sale Brass Skeleton Clock kit

    joerom, I'm stepping in here with an idea for you to try because of your last post and your mention of the basement stairs. I know it has nothing to do with this clock kit but it's an old-guy to another old-guy suggestion. There is an easy way to take the intimidation out of those stairs and...
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    Otto Langen engine 1867

    gg89220, I am proceeding fairly well with my version of this engine but I'm getting to some of the more technical parts. I'm working on this with a long-distance relationship with my friend Bruce in Perth, Australia. He has posted a couple of questions, also. I'm working on the fuel valve and...
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    Otto Langen engine 1867

    Thank you for the reply. My concerns were about possible running heat and vibration loosening the bond. Obviously I won't be doing anything of the sort until I'm at final assembly and have made sure that it won't need to be disassembled again.
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    Otto Langen engine 1867

    gg89220, I realize this is a pretty old post but I'm currently working on a model of this engine and have a question (actually, many but time will straighten out most of them 😏) I'm making the column in three pieces like you did and have a cylinder sleeve, also. What I've started to be concerned...
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    Calculating Hole Size For Odd Thread Sizes

    I know this is the wrong place to discuss this but I'll make one more answering comment. I caught that name because I own an NCRS Top Flight 1987 Corvette.
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    Calculating Hole Size For Odd Thread Sizes

    L98fiero, I have glanced at all the Machinery Handbook information on taps and threading until it fogs my glasses. This is good basic information but my concern was for unusually odd sizes such as making a nut (with any random TPI) for this 1.249" shaft. When I used the simple formula that...
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    Calculating Hole Size For Odd Thread Sizes

    I was making an arbor for machining features on the body of an engine project that I've started and I wanted to test this. I wanted to thread the one end of the shaft and make a nut for it – but wanted to do it the right way. I chose the simplest method posted here (shaft diameter - 1/threads...
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    Calculating Hole Size For Odd Thread Sizes

    OK, I think I've got it. Back to the 1/4-20 as a standard: You are taking the 20 TPI as 1/20 so 0.250 - 0.05 = 0.200 and the closest size drill is still #7. The other formula does pretty much the same thing with a lot more math. This one fits in the brain with some room to spare. 😉 Thanks...
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