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Thread: Things I've learned this weekend.

  1. #1
    Join Date
    Aug 2007
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    Things I've learned this weekend.

    For some reason, I got a project in my head of some things I wanted to make. I thought it would be fun to work at making some custom 'coins' out of aluminum. Mainly I thought it would be fun to learn how to mill aluminum.

    What I've learned is:

    1) Calculating Chip load is very helpful. Instead of just randomly plugging in feed rates, it helps to use it as a guide.
    2) When cutting Aluminum, In my case, Lubrication helps. I just used som tapping fluid, but it made a huge difference in how things cut.
    3) When cutting little discs out of aluminum, I had much better luck doing a rough cut, and then a final finish cut to cut it out.
    4) Explore the simple engraved lines more than than necessarily doing a bunch of vcarves.
    5) I should really look at getting some smaller bits than 1/8", 1/16" might be enough to help with pocketing some smaller areas.
    6) I gets really cold standing around in the garage at temperatures right around freezing watching a CNC run it's programs.

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    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  2. #2
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    Dang it. Left out the most important thing I learned.

    Using a touchplate to set the Z-zero. That is super userful. You connect an alligator clip to the bit, and put a little plate underneath the bit, then the cnc will automatically figure out where the exact zero to the top of the workpiece is.
    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  3. #3
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    Those are cool-looking coins.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  4. #4
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    Thanks Vaughn, I've still got a long, long way to go, but these were the first 2 that turned out halfway decent.

    I'm not sure what is more difficult, the design, or getting it to actually render the way I imagine it should. But working my way over both those learning curves.
    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  5. #5
    Join Date
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    So you just bought the discs? One think I like about US is that you can buy almost anything, unlike here. Those coins look great, I can imagine may uses of them.
    Best regards,
    Toni

    __________________________________________________ __________________________________________________ _________________
    web site:http://www.toniciuraneta.com
    I also dream of a shop with north light where my hands can be busy, my soul rest and my mind wander...

  6. #6
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    I can't believe you didn't turn a FWW coin!!!! They do look cool!
    Jon

    God and family, the rest is icing on the cake. I'm so far behind, I think I'm in first place!

    Host of the 2015 FAMILY WOODWORKING GATHERING

  7. #7
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    Brent very very cool. As a guy that has been fascinated by all the money in the world , had a fair bit to deal with making validators for coins and was a franchisee for commemorative coins for Rugby World Cup once .....man those came out real nice.

    Now lets have a collectors edition FWW one with a woodworking tool on one.

    Toni in my view what makes things work in the USA is the freedom, and UPS and Fedex.
    cheers

  8. #8
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    Quote Originally Posted by Jonathan Shively View Post
    I can't believe you didn't turn a FWW coin!!!! They do look cool!
    I need to do that next!

    Quote Originally Posted by Rob Keeble View Post
    Brent very very cool. As a guy that has been fascinated by all the money in the world , had a fair bit to deal with making validators for coins and was a franchisee for commemorative coins for Rugby World Cup once .....man those came out real nice. Now lets have a collectors edition FWW one with a woodworking tool on one.
    Toni in my view what makes things work in the USA is the freedom, and UPS and Fedex.
    I'll work on one!

    Quote Originally Posted by Toni Ciuraneta View Post
    So you just bought the discs? One think I like about US is that you can buy almost anything, unlike here. Those coins look great, I can imagine may uses of them.
    Just started off with 2" flat aluminum bar stock. I cut them into squares then screw it down on the spoil board.



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    I polish it up then cut it. Here's what it looks like in the computer.

    Click image for larger version. 

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    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  9. #9
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    Mar 2007
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    Brent

    I suspect you already know this but there is a world of difference in Aluminum alloys. If that bar stock is the normal hardware stuff it is very gummy and tough to cut cleanly. I used to be familiar with several alloys but don't rememmber many specifics but it is worth looking into.

    Garry

  10. #10
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    May 2007
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    Thomasville, GA
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    Very nice, Brent! Keep up the good work!!!

    (I'll need lessons on aluminum soon!)
    Bill Arnold
    Citizen of Texas residing in Georgia.
    NRA Life Member and Member of Mensa
    My Weather Underground station

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