[Woodworkers] Copper metal working

[Greg]

How about a homemade extruder?

On Tue, Mar 30, 2021, 5:23 PM Jason Beam via Woodworkers <
woodworkers at lists.sawdusters.org> wrote:

> I like this suggestion of drilling on the lathe a lot more. The grabbiness
> of the copper is a lot less of a factor when you're feeding with the
> tailstock of a lathe.
>
>
> Jason Beam
> *Beamer's Brands <https://beamerweb.com>*
> On 3/30/2021 2:18 PM, Richard Allen via Woodworkers wrote:
>
> I have turned copper on a wood lathe before.  I would take a 7/8” rod
> about 2” long an turn a sphere at one end.  The end being held by the lathe
> could be turned down to a suitable diameter so the sphere would be attached
> to the rod as a single piece of copper.  Another option would be to drill
> and tap the 1” sphere and thread some of your 3/8” rod to screw into the
> taped sphere.  Copper drills fine.  Plan on discarding the drill bit as
> sometimes the copper will “weld” to the drill bit.  I would do the drilling
> with the 1” sphere in a chuck on the lathe.  I would turn down the 1”
> sphere by mounting the 3/8” rod in a chuck on the lathe.  Copper turns with
> a scraper.  It is a fairly slow process but 10 minutes of scraper work and
> 15 minutes of sanding and polishing should give you a sphere shape to your
> likening
>
>
> On Mar 30, 2021, at 5:02 PM, chuck.steger--- via Woodworkers
> <woodworkers at lists.sawdusters.org> <woodworkers at lists.sawdusters.org>
> wrote:
>
> 
>
> Hope everyone is safe and healthy!
>
>    I need some advice on working solid copper. I’ll give you some context
> on what I’m doing.
>
>    I designing and building a Heritage Box for someone. Everything that
> goes into the design and construction will have some elements from their
> cultural background. Their mother and grandparents lived and worked in a
> copper mining town in Chile and copper was a big part of their lives. To
> bring copper into the design, I will attach the legs to the box using
> copper rods. Since the legs taper, I will use 1/8”, 3/16”, and ¼” rods and
> leave a ¼” gap between the legs and box. But this is subtle and I wanted to
> add something else. So I want to add a copper sphere at the top of the box.
> I drew up the design full scale and the sphere looks good at ¾”. So, I
> started researching copper spheres and what I found are jewelry spheres ½”
> and less or solid spheres 1” and greater. I ordered the 1” spheres which
> are actually used for plating copper.
>
>    So here are some of my issues/questions/concerns:
>
>    - Is there any way possible to reduce the diameter? I thought about
>    some kind of holding contraption on a lathe and then using files but that
>    just sounds like a bad idea.
>    - The sphere weights in at 3 oz. Now that may seem light but it’s a
>    little heftier that I wanted because I don’t want it to tip the box over
>    when hinged open. The box footprint will be 8”x12” so it may be OK. I will
>    build a prototype as I always do so I’ll find out. Also with a prototype it
>    will be easy to see if 1” is too big. A ¾” hollow sphere would be perfect
>    but I can’t find that.
>    - Will solid copper drill OK? I would like to drill a hole for a rod
>    to anchor the sphere to the box. I will epoxy the sphere to a cradle but a
>    rod would be so much more secure IMO. And, given the weight, I would feel
>    better.
>    - Here’s another take …. Is there a way to cut the sphere in ½” I only
>    have WW bandsaws so even with a metal blade, WW bandsaws run too fast,
>    don’t they? The thought process here is maybe I take the two half spheres
>    and attach them to the side of the box as an adornment. The design will be
>    mostly Asian so spheres might look good.
>
>    So you can see the design is in total flux. I’ve started building the
> prototype out of pine.
>
>
>
> Chuck
>
>
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> hang out with me.
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