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    help identifying aluminum alloy

    It machined very well, but I have no idea how to identify the particular alloy.
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    help identifying aluminum alloy

    Upon further scrutiny I think that is exactly what happened. Thanks for the replys, John.
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    help identifying aluminum alloy

    It is not a peel-off piece of plastic. The pattern also has a very noticeable texture to it.
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    help identifying aluminum alloy

    I bought this piece of 1/2" aluminum plate on eBay. It has this pattern on one side, and the other side seems to be just a mill finish. Does anyone know what this pattern means? Thanks, John.
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    How to use a Conical Edge Finder

    I 'm sure my post wasn't very clear, and you are absolutely correct. What I was trying to say was if the conical side goes into the hole on center while the spindle is turning, and any down pressure is supplied, it will cause the conical part to stop spinning and ruin the spring. John
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    How to use a Conical Edge Finder

    This is probably obvious, but never let the conical point touch the part while it is centered in a hole and the spindle is turning. The point will spin and ruin the spring inside of the tool. First hand experience. John
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    How to attach a sight glass?

    Does anyone know where I can find a 1 1/2 inch clear glass disk? All I can find are disks that are textured on one side. Thanks, John.
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    How to attach a sight glass?

    Thanks for the reply Peter, For what it's worth, I planned to glue the glass to the outside of the ring after it was soldered. Also, I'm not sure what a PCD is. Thanks again, John
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    How to attach a sight glass?

    Hi, I am putting together a brass gas tank that is 1 1/2 inches in diameter. I would like to make one end out of glass. I am wondering what would be the best way to glue the glass to a brass ring that would be soldered to the tank end. I was thinking of silicone, but I don't know if it would...
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    Use loctite glue

    I have a quick question concerning removing a loctited part with heat. After heating to the proper temperature, is the joint unglued forever, or will the loctite bond again after the parts cool? Thanks, John.
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    Southbend lathe oil

    Thanks Ted, great information, John.
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    Southbend lathe oil

    Hi, Is it possible to substitute non detergent motor oil of the proper weight for the oils that come with the kits from eBay? I was thinking of 10W non detergent for the type "B" oil. Thanks, John.
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    Solidworks for Mac?

    kvom, I'm not sure what you mean by "Windows experience number" is 7.4. Could you please explain that? Thanks, John.
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    Solidworks for Mac?

    I checked out the onshape website, and it looks like $1,500 for the basic version. I may be wrong, but I should be able to buy the hardware for Solidworks for that price. Thanks for the reply, John.
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    Solidworks for Mac?

    Hi, I have been interested in learning something about 3-d modeling. The software is expensive but I was able to buy Solidworks 2019/2020, student edition for $20.00 as a veteran. Not being very computer savvy I didn't realize it will not work with Mac OS. Do I have any options other than...
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    ER40 by MT3 collet chuck

    WOB, Thanks for the tip. It seems to me that any size 4 jaw would work as long as it can be secured firmly to the RT. John
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    ER40 by MT3 collet chuck

    https://www.ebay.com/itm/New-100MM-DIAMETER-ER-40-COLLET-CHUCK-Compact-Lathe-Tight-Tolerance/112413227062?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D20131003132420%26meid%3D4b1e25a8252741ee82656d45fdd219ea%26pid%3D100005%26rk%3D2%26rkt%3D12%26mehot%3Dpp%26sd%3D352240838594%26itm%3D11...
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    ER40 by MT3 collet chuck

    The plate looks like a good option. My RT has 4slots so I am not quite sure how I would mount it to the table. Maybe drill new holes? Thanks, John
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    ER40 by MT3 collet chuck

    Hi, I have a Vertex rotary table with an MT3 bore. I would like to use my ER40 collets to hold work on this table. I saw on E-bay a Shars CNC milling holder that took ER-40 collets, and had an MT3 taper on the other side. Do you think that this would work on my table without using a drawbar to...
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    South Bend spindle adaptation

    Hi, I have a Vertex 8" rotary table with a MT3 center hole. I also have a South Bend 9 inch lathe. I would like to use my 3 and 4 jaw chucks, which have 1 1/2 8 backplates, on the table. I also have a very used South Bend 9" spindle. Do you think it is possible to cut and turn a mt3 taper on the...
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