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Thread: Gun Grips...continued

  1. #1
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    Gun Grips...continued

    This is a continuation of some pistol grips I made a few years back, and almost two years ago started working on files to do them on my CNC, but found my cnc wasn't cutting it (literally )

    http://familywoodworking.org/forums/...-update!/page4

    So over the past week I've located all the files and after learning a bit more about cambam and Mach3 I've been able to actually make them do something with a little less frustration.

    It takes several operations to get to the final cut-outs, I forgot to get pics of carving the inside of the grips, but can see it here in the 3rd pic.

    Click image for larger version. 

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    One thing I learned was using the holding tabs in cambam, which keeps the piece held in place when cutting out the profile of the grip.
    Click image for larger version. 

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    This is after a quick 1 minute oscillating sander clean up. This is just a test grip and will be tossed.
    Click image for larger version. 

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    The final pieces rough sanded.
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    And I did find out that I need to double check my gcode before running a new file. Also that my new setup has quite a bit of torque, it cut right through 1/2" red oak in a single pass before I could hit the estop.
    Click image for larger version. 

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    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  2. #2
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    looks like you gaining ground on these,, but the one side looks pretty thin for strength might want to give it some adjustment on your program..
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  3. #3
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    Quote Originally Posted by larry merlau View Post
    looks like you gaining ground on these,, but the one side looks pretty thin for strength might want to give it some adjustment on your program..
    Good eye! Yes the back recesses were each about .05" off, so had adjusted them after these were cut. The drawings are also setup where I can cut the recesses on each side of a blank, then spit it with the band saw for doing a book matched set.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  4. #4
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    Very interesting. What do you plan to do with this ability once you get the kinks worked out?
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  5. #5
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    Quote Originally Posted by Frank Fusco View Post
    Very interesting. What do you plan to do with this ability once you get the kinks worked out?
    Probably put a few up for sale.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  6. #6
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    I am waiting on that store for a few other projects. hint hint hint.

    Darren i have a few questions

    How did you get the shape into the cad file in the first place? That is something i have been wondering about. On the software that came with my vinyl cutter, i can take a picture convert to black and white then use the outline profile and can cut it. But scaling that to the correct size to fit is another story dependent on how the pic was taken etc.

    Do you have a pic of the outside after cutting? Looked to me like the outside is being shaped more by you and the sander than the cnc or am i mistaken.

    Would it be unrealistic on your machine to expect to be able to put cross hatch in on the grip so nice smooth carve finish and then cross hatch in key places like on a rifle stock.

    Would you venture to have a go at cnc carving a rifle stock for one of those old rifles you have?

    Great achievement either way , but I am coming to accept there aint much that you cannot do when you put your mind to it. Well done.

    Just an idea but how about carving out a negative and using it as a mold for vacuum forming and then taking a carved out piece of wood and laminating a nice burl veneer onto the finished grip and using the negative as a mold to pull the i would imagine well steamed veneer onto the grip. That would allow some really cool grain grips to be produced and still be all wood but not at the price or i would imagine lack of structural strength of a piece of solid burl being machined.
    cheers

  7. #7
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    Nice! Once you zero the process in, you could stabilize the wood to help alleviate any chance of splitting....or just get a bigger gun.

  8. #8
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    Looks good so far, Darren!

    I'll be glad when I get half as far along with my machine as you are with yours!
    Bill Arnold
    Citizen of Texas residing in Georgia.
    NRA Life Member and Member of Mensa
    My Weather Underground station

  9. #9
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    Quote Originally Posted by Rob Keeble View Post
    I am waiting on that store for a few other projects. hint hint hint.

    Darren i have a few questions

    How did you get the shape into the cad file in the first place? That is something i have been wondering about. On the software that came with my vinyl cutter, i can take a picture convert to black and white then use the outline profile and can cut it. But scaling that to the correct size to fit is another story dependent on how the pic was taken etc.

    Do you have a pic of the outside after cutting? Looked to me like the outside is being shaped more by you and the sander than the cnc or am i mistaken.

    Would it be unrealistic on your machine to expect to be able to put cross hatch in on the grip so nice smooth carve finish and then cross hatch in key places like on a rifle stock.

    Would you venture to have a go at cnc carving a rifle stock for one of those old rifles you have?

    Great achievement either way , but I am coming to accept there aint much that you cannot do when you put your mind to it. Well done.

    Just an idea but how about carving out a negative and using it as a mold for vacuum forming and then taking a carved out piece of wood and laminating a nice burl veneer onto the finished grip and using the negative as a mold to pull the i would imagine well steamed veneer onto the grip. That would allow some really cool grain grips to be produced and still be all wood but not at the price or i would imagine lack of structural strength of a piece of solid burl being machined.
    I actually scaled them off my hand drawn plans I did a few years back (http://darrensshop.com/?p=50) by importing a picture of the drawing into sketchup and drawing over the lines there. At some point, measure between two known points of the image with the tape measure tool and enter the actual distance manually and press enter, sketchup will ask if you want to scale your drawing to match. My drawings aren't in true 3d form yet, the curves were done by following individual lines I drew a the height I needed them (by measuring a finished grip in a grid pattern), a little over sized. They are quite rough when first done on the cnc, but really close to the profile I want. So until I get the drawings to where they have curved faces on them, the checkering isn't possible. I'm trying to learn some new plugins to work on this. As for stocks, I'm working on a 4th axis for the machine where I could load a rifle stock or blank for one and carve one out, but don't think I've got the swing in my Z axis to support it as it sets.

    Quote Originally Posted by Ted Calver View Post
    Nice! Once you zero the process in, you could stabilize the wood to help alleviate any chance of splitting....or just get a bigger gun.
    I've got some stabilizer on order for doing some blanks just need to find suitable vacuum chamber to make the setup complete.

    Quote Originally Posted by Bill Arnold View Post
    Looks good so far, Darren!

    I'll be glad when I get half as far along with my machine as you are with yours!
    Thanks, you'll be there in no time, just takes time to learn all the things that go along with these machines.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  10. #10
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    @ Darren: A suitable vacuum chamber could be a piece of large diameter heavy wall plastic pipe. Cap on one end and a flat plate with closed cell foam on the either. As long as you need it to be. Diameter as large as you can find.
    ++++++

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