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    How do I get a perpendicular hole?

    Wow! Thanks guys for all the great information...there's a wealth of stuff in the last few posts. Steamer Dave I do have a dial indicator, but didn't know how to use it to square the table. I see now how it's done thanks! This morning I went up a took my first piece (the one with the fairly...
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    How do I get a perpendicular hole?

    ahhh. I could be that the drill bit isn't sharp enough....I just got a new set, I'll try those. What is the correct order of operations? 1) spot/center drill for start 2) Drill a through hole (but with what percentage of the final hole size?) 3) Drill final diameter. Is that right?
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    How do I get a perpendicular hole?

    Ok, seriously newbie question here: How do I drill/machine a perfectly perpendicular hole? I'm putting a 3/8" hole in some 3/8" aluminum. I used a 1/4" drill, followed by a 3/8" drill. The vise is a machining vise that I used on my drill press, which checks out to be square. The first time...
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    1st Engine - An HMEM EZ-Engine Build

    I found some nice brass stock this week. I got about 6 inches of 2.5" brass round and about 7 inches of 1.5" brass round. $4 a pound. I chucked up the huge piece (huge for a Sherline) of brass round, faced it and turned it down to 2.2 inches (max diameter for my frame). I cut the piece off in...
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    1st Engine - An HMEM EZ-Engine Build

    Thanks for the help DOC123. My first attempt at CNC cutting the crank failed miserably. I made the depth cuts too deep and pushed the piece off it's clamping. Oh well...I'll try again soon. Ok, next problem: I made a bushing for the crankshaft, my first one and it came out really nice I think...
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    1st Engine - An HMEM EZ-Engine Build

    Ok, THANKS guys. I went back into the shop this evening and looked at the frame. It started to seem like a lot more work to remake it from scratch than just to tap out the mistaken holes to 6-32 and see if there was enough "meat" on the valve block. I checked and sure enough it appears to be...
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    1st Engine - An HMEM EZ-Engine Build

    Hi Guys, Thanks for the comments! When I drilled the holes too large, the first thing I did was look at my tapping guide hoping I could just put in bigger screws. 6-32 would work fine I think. I have about 8 of those 1/2 salvage plates though, so I'll just do it right. I need to use one to...
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    Proposal to design a "First Build" engine

    Started my first engine....it's and EZ-Engine! I began a topic: http://www.homemodelenginemachinist.com/index.php?topic=11047.0
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    1st Engine - An HMEM EZ-Engine Build

    I managed to wreck my first attempt at the Engine frame. Well, not wreck, but I have a few of those salvaged blocks so I'll try again. What happened was that the air pass-through hole is 0.125. The other four holes are for tapping 4-40. Guess what? I drilled them all 0.125!!! I could "fix" it...
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    1st Engine - An HMEM EZ-Engine Build

    I used my milling attachment to mill the flat on the valve...I did the piston with a file. I wish I had a reamer for the cylinder and valve holes...I just used a drill. Seems smooth enough though.
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    1st Engine - An HMEM EZ-Engine Build

    Here are the basic components I have so far. The Cylinder and Valve Block I have done. I faced the mating surface but didn't bother with the others. The Piston is done. The Valve is done.....WRONG! But I think it will work. I think the last bit is too small...0.125 instead of 0.250 in width...
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    1st Engine - An HMEM EZ-Engine Build

    Hi All, This is my first post! First let me say thanks to black85vette for putting together these plans! I needed a simple project and found these. I didn't realize it was such a recent creation (just a year ago). I wonder how many of these are out there now? I'm learning to use my first...
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