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  1. #1
    Join Date
    Aug 2011
    Location
    Burnley
    Posts
    77

    CNC machining

    does anyone on here have a small CNC lathe for making parts for black powder guns ,just a thought that there may be a keen machinist wanting a project for the winter

  2. #2
    Join Date
    Jul 2007
    Location
    Falkirk
    Posts
    459
    CA Models machined a part for my semi automatic shotgun, worth looking up!

  3. #3
    Join Date
    Nov 2007
    Location
    nottingham
    Posts
    512
    Why CNC?

  4. #4
    Join Date
    Jun 2008
    Location
    twickenham
    Posts
    2,935
    Yes why CNC

  5. #5
    Join Date
    Feb 2008
    Location
    Huntingdon
    Posts
    9,253
    Why?

    Because these days, it's easy and comparatively cheap to do it on a hobby lathe.

    I do many small bits and pieces for my trains on a forty-y/o Unimat SL - ie. a Stone-age hobby lathe. But being able to punch a bunch of co-ordinates into a reader and watch while your lathe/mill/whatever does it all for you has a certain appeal.

    Especially of interest is the fact that it really isn't much more expense to add it to your [modern] lathe than getting another costy accessory for it. I had recourse to going around a number of precision engineer shops in the last year or so, trying to get a reasonable price and failed dismally in an effort to replicate the Ruger Old Army base pin/cylinder pin, which has an inherent weak point in the design. If I had ready access to the material, and carbide tools, I would have been able to make one for myself, but I had good interest and might have sold at east ten to folks here who had also had the bl**dy thing bent by clumsy reloading. As it turned out, the cheapest provider wanted £60+VAT EACH.

    A skilled amateur may well be able to make a few in return for a reasonable recompense, rather than taking the pi$$.

    tac

  6. #6
    Join Date
    Jun 2010
    Location
    Manchester
    Posts
    8,331
    Quote Originally Posted by tacfoley View Post
    Why?

    Because these days, it's easy and comparatively cheap to do it on a hobby lathe.

    I do many small bits and pieces for my trains on a forty-y/o Unimat SL - ie. a Stone-age hobby lathe. But being able to punch a bunch of co-ordinates into a reader and watch while your lathe/mill/whatever does it all for you has a certain appeal.

    Especially of interest is the fact that it really isn't much more expense to add it to your [modern] lathe than getting another costy accessory for it. I had recourse to going around a number of precision engineer shops in the last year or so, trying to get a reasonable price and failed dismally in an effort to replicate the Ruger Old Army base pin/cylinder pin, which has an inherent weak point in the design. If I had ready access to the material, and carbide tools, I would have been able to make one for myself, but I had good interest and might have sold at east ten to folks here who had also had the bl**dy thing bent by clumsy reloading. As it turned out, the cheapest provider wanted £60+VAT EACH.

    A skilled amateur may well be able to make a few in return for a reasonable recompense, rather than taking the pi$$.

    tac
    Absolutley right. With a CNC lathe any number of parts can be turned out and they will be all the same.

    As suggested a model shop might do the part, but, I would be inclined to find a model engineering club because the members who turn out live steam locos and other scaled down models are very skilled.

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