Knight Foundry in Sutter Creek, California still does iron casting.
https://knightfoundry.com/
On Sunday, January 23, 2022, 12:27:00 PM MST, Matthew Herd
wrote:
Depending on size, I’d consider some “durabar” or similar continuously cast
iron bar. I made a compound for my atlas lathe an
> > From: andy pugh [mailto:bodge...@gmail.com]
> >
> > But, making patterns and having parts cast is _fun_ :-)
> >
> > --
> > atp
>
> Oh and here's the core box.
First crack at the core using the instructions from Dave Gingery's building a
lathe from scrap series.
Very fine sand, 20 Table Spoo
This
On Sun, Jan 23, 2022 at 4:30 PM andy pugh wrote:
> On Sat, 22 Jan 2022 at 04:49, Chris Albertson
> wrote:
> >
> > Arduino? Too slow to coune pulses if they happen every 0.0001 inch
> unless
> > the table moves slow.
>
> As long as it gets a couple of samples every 0.1" it should be fine.
On Sat, 22 Jan 2022 at 04:49, Chris Albertson wrote:
>
> Arduino? Too slow to coune pulses if they happen every 0.0001 inch unless
> the table moves slow.
As long as it gets a couple of samples every 0.1" it should be fine.
Between the pins it's an absolute encoder, like a multi-turn resolver.
On Sun, 23 Jan 2022 at 23:30, fxkl47BF--- via Emc-users
wrote:
> It looks like Palmgren had a passel of those.
> https://vintagemachinery.org/pubs/2459/16973.pdf
Page 14 shows a base design that could be copied.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed fo
On Sun, 23 Jan 2022, John Figie wrote:
> While looking at your photos I realized that I could have almost the same
> rotary table. It was recently given to me. Mine is a craftsman and is
> mounted on an x-y cross slide. but some of the castings look the same to me
> in the picture. Yours has a lar
On Sun, 23 Jan 2022, John Figie wrote:
Date: Sun, 23 Jan 2022 16:05:53 -0600
From: John Figie
Reply-To: "Enhanced Machine Controller (EMC)"
To: "Enhanced Machine Controller (EMC)"
Subject: Re: [Emc-users] using mesaflash with mesa 7i80
John Figie
On Sun, Jan 23, 2022 at 3:47 PM Peter C
John Figie
On Sun, Jan 23, 2022 at 3:47 PM Peter C. Wallace wrote:
>
> As I suggested before, to avoid possible overlap with common NAT ranges, I
> would
> setup the RT link to use a 10.10.10.100 IP address on the host and set the
> 7I80
> to use its EEPROM address (which defaults to 10.10.10.1
On Sun, 23 Jan 2022, John Figie wrote:
Date: Sun, 23 Jan 2022 15:33:49 -0600
From: John Figie
Reply-To: "Enhanced Machine Controller (EMC)"
To: emc-users
Subject: [Emc-users] using mesaflash with mesa 7i80
So far I just want to verify that I can communicate with the 7i80. I have:
Debian
So far I just want to verify that I can communicate with the 7i80. I have:
Debian 10 with preempt rt
My hardware included an intel dual port NIC as well as the one on the MB
so far I have not been able to get what I think should happen using
mesaflash and a dedicated point to point network from an
I suspect that a mini-mill would have issues with an 8-inch rotary table.
-Original Message-
From: andy pugh
Sent: January 23, 2022 2:39 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] rotary table re-engineeering
On Sun, 23 Jan 2022 at 18:59, Chris Albertson wrote:
Known good part obscures the problem of shrinkage unless you want them
to take your known good and scale it for shrinkage which they will do at
$$/hr. ;-)
Working from their shrink % will allow you to do the sizing and that
make it simple for them.
A foundry 100 mi or so from me and out in the b
On Sun, 23 Jan 2022, andy pugh wrote:
> On Sun, 23 Jan 2022 at 18:59, Chris Albertson
> wrote:
>
>> But this is for a "*mini*-mill" you do NOT need cast iron parts.
>
> He said it was a "small mill". Many would consider a Bridgeport to be
> a small mill. I certainly consider my Harrison to be s
While looking at your photos I realized that I could have almost the same
rotary table. It was recently given to me. Mine is a craftsman and is
mounted on an x-y cross slide. but some of the castings look the same to me
in the picture. Yours has a larger diameter wheel for rotary motion with 3'
gra
On Sun, 23 Jan 2022 at 18:59, Chris Albertson wrote:
> But this is for a "*mini*-mill" you do NOT need cast iron parts.
He said it was a "small mill". Many would consider a Bridgeport to be
a small mill. I certainly consider my Harrison to be small, but it
weighs nearly a ton.
But, making patt
Depending on size, I’d consider some “durabar” or similar continuously cast
iron bar. I made a compound for my atlas lathe and several other items from it.
A bit hard on tools but the parts have come out great. I prefer to use a face
mill to machine the flat surfaces and then carbide tooling to
What you give a foundry is typically the part you want, a pattern. They
can advise on the limits of what they can do. For example there is a
minimum and maxim thickness and overall size.
They can also tell you how much the iron will shrink so you can adjust the
pattern
Then for you own good you
On Sun, 23 Jan 2022 at 02:26, fxkl47BF--- via Emc-users
wrote:
> So from the photos in the ad what would I want to have made?
> A big rectangle?
Something stylish and in-keeping with the original, I would think.
Certainly a block thick enough to keep the lowest point of the main
casting clear of
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