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  1. Here are a few pics. Constructive criticism/ideas...

    Here are a few pics. Constructive criticism/ideas welcome:

    The cross vial hole is simply bore .0015 oversize for the vial. Since it is of low sensitivity, it could just be fixed (it is not now) in...
  2. Between this thread and a related thread I have...

    Between this thread and a related thread I have wandered around on price. My apologies for that.

    I have sold my first batch of raw, stress-relieved castings at 60 to PM members. I feel this is a...
  3. For those folks who have expressed an interest...

    For those folks who have expressed an interest but have not yet been in contact to actually set up a purchase, I am currently sold out of 8” levels. But, I expect to cast some more within the next...
  4. I am also in the market for a good parting tool....

    I am also in the market for a good parting tool. What Shars-supplied tool did you choose?

    Denis
  5. Well, after much work and frustration I have...

    Well, after much work and frustration I have finally gotten good results from this casting that seemed like it should be a simple pattern to cast correctly and I have added test and a logo to the...
  6. The key question here is how much extraction...

    The key question here is how much extraction force must the panels withstand and how much temperature variation is there? If they are simply a drop-in application where gravity assists in holding...
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    I think concern for causing lasting distortion of...

    I think concern for causing lasting distortion of the table due to heating the bolts is unfounded. To cause strain relief/lasting distortion of the table, temperatures would need to be in excess of...
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    A couple questions: If one of those bolts you...

    A couple questions:

    If one of those bolts you are milling off loosens while it is being milled, how will that carbide bit hold up? Loosening is likely since the bolt will no longer be stretched...
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    Nah, if you heat the screw and then right after...

    Nah, if you heat the screw and then right after that hit it with the driver, it will still be plenty hot. I would not advise touching it with your finger!

    Denis
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    I would try this method and I am pretty sure it...

    I would try this method and I am pretty sure it would work:

    Use a center punch and a prick punch to remove the epoxy from the head by first using the center punch with a medium size hammer to give...
  11. For welding just get a single focal length...

    For welding just get a single focal length cheater that has 1.5 diopter magnification over the entire lens not a cut in the bottom 1/3rd of the lens. Like this: PYRAMEX SG7910D15 Pyramex Clear...
  12. No worries, Keith. I thought you were kidding...

    No worries, Keith. I thought you were kidding too. But, it gave a chance to point out a few things that maybe needed clarification (or not) anyway.

    Denis
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    I agree that USPS Flat Rate is hands down the...

    I agree that USPS Flat Rate is hands down the best choice for those items that fit in their boxes. I use them whenever possible. The problem is they have very limited selection of box sizes. UPS...
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    Hmmm, I don't get it. I just (yesterday) bought...

    Hmmm, I don't get it. I just (yesterday) bought UPS XL shipping from Western Washington to Connecticut for 25 dollars plus 5 dollars insurance. Where does 42 dollars come in? I think the rate is...
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    Agree that packaging is important and the...

    Agree that packaging is important and the responsibility of the person purchasing the shipping. Since my straight edge was carefully machined and potentially damaged if not securely packaged, I made...
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    Just posting a little boots-on-the-ground...

    Just posting a little boots-on-the-ground experience here. I shipped one of my 36" Foster Featherweight cast iron straight edges to a PMer in Connecticut from Washington State today using the simple...
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    I am not taking sides on the powder coat...

    I am not taking sides on the powder coat question. But, I can say that the temperatures involved in baking powder coat are very unlikely to distort the castings. Temperatures on the order of 1000 F...
  18. Ok, I don’t know the OP from Adam, but I would be...

    Ok, I don’t know the OP from Adam, but I would be willing to bet he is about 45 to 50 yrs old. At that age the lens stiffens and just will not respond as well to the muscles that focus it when...
  19. Not at all. What we are discussing is the...

    Not at all. What we are discussing is the question of the "ultimate" way of inserting a vial into the simple cheap (the charge is to help reimburse the expenses involved in building and maintaining...
  20. Thanks for the suggestions Sfriedberg, TGT, and...

    Thanks for the suggestions Sfriedberg, TGT, and Paolo. It is very helpful to get various points of view. It really helps refine design considerations. Putting all the ideas together, the idea of...
  21. You bring up a good point. You MIGHT be right. ...

    You bring up a good point. You MIGHT be right. But, my intuition is that because the "socket" that the tapered pin enters is split, that locking will not occur. And the socket should probably not...
  22. Doh! Would not have thought of that, but might...

    Doh! Would not have thought of that, but might have done it (accidentally) anyway. That is a good idea. Only a very few thou eccentricity would do the trick. Easy to do in the 4-jaw or even just...
  23. A few days ago I said I would put up a drawing of...

    A few days ago I said I would put up a drawing of a possible flexure mechanism that could be used to adjust a vial mounted in the new small level/parallel/ prism/ SE. Well here is a rather crude...
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    Not sacrilege, but also not necessary or...

    Not sacrilege, but also not necessary or particularly useful. Just relieve the bottom of the toolpost as above. Then do more if you find you (unlikely) need to. I find myself wanting to have my...
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    Sounds like P20 should be excellent for your...

    Sounds like P20 should be excellent for your aluminum-holding needs as it is typically HBW 300 or around HRC 30. Easy to machine and no heat treat needed. What’s not to like? (But the A2 mentioned...
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