[PSUBS-MAILIST] boring tool

[Rick Patton via Personal_Submersibles]

Probably a good idea especially looking at the cost for such a limited use!
you doing any thing more on your mechanical arm?
Rick

On Mon, Nov 27, 2017 at 8:52 AM, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Rick,
> I have seen them work and they are nice for sure!  I think to keep it
> real, I will just torch cut a smaller hole then grind off the hardened
> surface and machine it with a home made line boring tool.
> Hank
>
> On Monday, November 27, 2017, 11:33:20 AM MST, Rick Patton via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hank,
>
> I have a Bosch mag drill and I love it! They do turn a slow rpm but not an
> expert in this field though I have drilled threw 1" plate and it goes threw
> like cutting butter. Contact Bosch and they can tell you. The only draw
> back to going that route is that not sure if you can rent one and they
> aren't cheap to buy plus if they do make a 6" bit, it's gonna set you back
> a pretty penny! good luck.
> Rick
>
> On Mon, Nov 27, 2017 at 2:56 AM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Rick, I thought about a Mag drill, but I was thinking about taking my
> small milling machine apart and making a mount on the sphere.  A mag drill
> could be adapted easier because I could just tack weld a flat plate to the
> hull for it to sit on.   I have never used a mag drill and don't know how
> slow they can turn?  I figure I will have to turn something pretty slow.
> Steve, I don't know if I can cut it out with a milling bit, I have very
> little experience with this idea.  I could cut it out small with a torch
> using a circle guide also.  I hate machining torch cut pieces because they
> tent to surface harden.  I suppose I could grind the hard surface off
> first.   I am looking for a easy clean way to do this, before I jump in and
> do it the hard way.
> My goal in to put two small ports in Elementary 3000 without welding them
> in.  I will machine two holes in the hull and then machine two conical port
> frames to fit the hull perfectly and will be retained from the inside of
> the hull.
> Any clever ideas to achieve this would be appreciated.
> Hank
>
>
> On Sunday, November 26, 2017, 11:16:30 PM MST, Stephen Fordyce via
> Personal_Submersibles <personal_submersibles at psubs. org
> <personal_submersibles at psubs.org>> wrote:
>
>
> Hi Hank,
> You could probably get away with using a holesaw - a one-piece one design
> for cutting metal, not the adjustable ones for cutting wood.  It would take
> a while and need lots of coolant and force, but I think it would be quite
> doable (I've seen big ones used on thick steel before).  The big ones
> aren't cheap though.
>
> Or couldn't you just mill out the circle with a smaller milling bit, so
> that you end up with a disc that drops out when you finish the cut?
>
> Cheers,
> Steve
>
> On Mon, Nov 27, 2017 at 4:17 PM, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.
> org <personal_submersibles at psubs.org>> wrote:
>
> Hank,
> Have you checked into a mag drill yet?
> Rick
>
> On Sun, Nov 26, 2017 at 1:49 PM hank pronk via Personal_Submersibles <personal_submersibles at psubs.
> org <personal_submersibles at psubs.org>> wrote:
>
> Hi All,
> Is there such a tool that can bore a 6 inch dia hole in 1 inch thick
> plate.  Some sort of milling machine tool, it needs to machine a precision
> hole.
> Hank
> ______________________________ _________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs. org <Personal_Submersibles at psubs.org>
> http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles
> <http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
>
>
> ______________________________ _________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs. org <Personal_Submersibles at psubs.org>
> http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles
> <http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
>
>
> ______________________________ _________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs. org <Personal_Submersibles at psubs.org>
> http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles
> <http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
>
> ______________________________ _________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs. org <Personal_Submersibles at psubs.org>
> http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles
> <http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
>
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20171127/ac7af173/attachment.html>