On 25.09.16 13:11, Danny Miller wrote:
> Some of our folks built a metal kiln and we tried to melt some aluminum
> swarf the neighboring metalshop discarded, at least what we thought was
> aluminum (no confirmation, but it wasn't steel). We got almost no metal,
> just inches of dross. No inert
On 25 September 2016 at 19:58, Jon Elson wrote:
> It may have been "pot metal", which is what carburetors and
> such parts used to be made of. Mostly zinc.
>
A slightly scurrilous name for a casting alloy that is appropriate for some
applications.
https://en.wikipedia.org/wiki/Zamak
--
atp
"
On 09/25/2016 02:04 PM, Danny Miller wrote:
> I did have a theory it was potmetal. Wasn't as bright and metallic as
> aluminum.
>
>
Once you are familiar with it, potmetal is easy to spot.
First, it is hard and brittle, and rings loudly when struck.
Or, you can take pliers and try to beak off a
I did have a theory it was potmetal. Wasn't as bright and metallic as
aluminum.
Danny
On 9/25/2016 1:58 PM, Jon Elson wrote:
> On 09/25/2016 01:11 PM, Danny Miller wrote:
>> Some of our folks built a metal kiln and we tried to melt some aluminum
>> swarf the neighboring metalshop discarded, at
On 09/25/2016 01:11 PM, Danny Miller wrote:
> Some of our folks built a metal kiln and we tried to melt some aluminum
> swarf the neighboring metalshop discarded, at least what we thought was
> aluminum (no confirmation, but it wasn't steel). We got almost no metal,
> just inches of dross. No iner
ge.net
> Sent: Sunday, September 25, 2016 1:29:29 PM
> Subject: Re: [Emc-users] Anybody have an idea how...
>
> On Sunday 25 September 2016 12:39:38 Jon Elson wrote:
>
>> On 09/24/2016 01:58 PM, Gene Heskett wrote:
>>> 43/25.4 to get inches = 1.6929etc * pi *rpms, so its 3.
to do with the stuff and only take
it at a deeply discounted rate.
- Original Message -
From: "Gene Heskett"
To: emc-users@lists.sourceforge.net
Sent: Sunday, September 25, 2016 1:29:29 PM
Subject: Re: [Emc-users] Anybody have an idea how...
On Sunday 25 September 2016 12:39:38 Jon
A number of recycles don't want anything to do with the stuff and only take it
at a deeply discounted rate.
- Original Message -
From: "Gene Heskett"
To: emc-users@lists.sourceforge.net
Sent: Sunday, September 25, 2016 1:29:29 PM
Subject: Re: [Emc-users] Anybody have an
On Sunday 25 September 2016 12:39:38 Jon Elson wrote:
> On 09/24/2016 01:58 PM, Gene Heskett wrote:
> > 43/25.4 to get inches = 1.6929etc * pi *rpms, so its 3.63"
> > per rev, and 800 revs is then 2900 SFM. So I should be
> > turning at least 1200-1300 to dup that. Right?
>
> Well, 800 RPM is not
On Sunday 25 September 2016 12:32:57 Jon Elson wrote:
> On 09/24/2016 01:26 PM, Gene Heskett wrote:
> > That alu oxide forms behind the cutting edge in free air in about 1
> > millisecond, and its the 2nd hardest substance known to man. And
> > its that oxide that eats our tools for lunch. Even
On 09/24/2016 01:58 PM, Gene Heskett wrote:
> 43/25.4 to get inches = 1.6929etc * pi *rpms, so its 3.63"
> per rev, and 800 revs is then 2900 SFM. So I should be
> turning at least 1200-1300 to dup that. Right?
Well, 800 RPM is not insanely slow for that diameter. I
didn't realize this was lath
On 09/24/2016 01:26 PM, Gene Heskett wrote:
>
>
> That alu oxide forms behind the cutting edge in free air in about 1
> millisecond, and its the 2nd hardest substance known to man. And its
> that oxide that eats our tools for lunch. Even carbide succumbs
> eventually.
Oh, one other thing is to cl
On Saturday 24 September 2016 12:14:01 Jon Elson wrote:
> On 09/24/2016 08:46 AM, Gene Heskett wrote:
> > On Saturday 24 September 2016 04:35:23 Nicklas Karlsson wrote:
> >> For aluminium I have vague memory there is a non optimal speed
> >> there metal stick the most. Can't however if it was feed
If you pull a big enough chip the heat goes with it... too small you
gall. Flood does help.
JT
On 9/24/2016 1:26 PM, Gene Heskett wrote:
> On Saturday 24 September 2016 12:11:34 Jon Elson wrote:
>
>> On 09/24/2016 03:04 AM, john mcintyre wrote:
>>> Good Day All,
>>> Problems with machining stick
On Saturday 24 September 2016 12:11:34 Jon Elson wrote:
> On 09/24/2016 03:04 AM, john mcintyre wrote:
> > Good Day All,
> > Problems with machining sticky material.
> > I find wd40 or crc penetrating fluid in the pressure pack and use
> > the fine tube nozzle to direct the spray right onto the cu
On 09/24/2016 08:46 AM, Gene Heskett wrote:
> On Saturday 24 September 2016 04:35:23 Nicklas Karlsson wrote:
>
>> For aluminium I have vague memory there is a non optimal speed there
>> metal stick the most. Can't however if it was feed rate or rotational
>> speed of tool.
> Probably surface speed
On 09/24/2016 03:04 AM, john mcintyre wrote:
> Good Day All,
> Problems with machining sticky material.
> I find wd40 or crc penetrating fluid in the pressure pack and use the fine
> tube nozzle to direct the
> spray right onto the cutting tip .
> This is good for all sticky materials as it stops
On Saturday 24 September 2016 04:38:18 Erik Christiansen wrote:
> On 24.09.16 18:04, john mcintyre wrote:
> > Machine the boss and hub to a firm slide fit ( stops misalignment in
> > assemble) then use Loctite 680 or similar. prep spay both surfaces
> > with activater let dry , then apply Locti
On Saturday 24 September 2016 04:35:23 Nicklas Karlsson wrote:
> For aluminium I have vague memory there is a non optimal speed there
> metal stick the most. Can't however if it was feed rate or rotational
> speed of tool.
Probably surface speed related. 6061 is fairly soft, but it wasn't
sticki
On Saturday 24 September 2016 04:04:22 john mcintyre wrote:
> Good Day All,
> Problems with machining sticky material.
> I find wd40 or crc penetrating fluid in the pressure pack and use the
> fine tube nozzle to direct the spray right onto the cutting tip .
> This is good for all sticky materials
r 24, 2016 4:38:18 AM
Subject: Re: [Emc-users] Anybody have an idea how...
On 24.09.16 18:04, john mcintyre wrote:
> Machine the boss and hub to a firm slide fit ( stops misalignment in
> assemble) then use Loctite 680 or similar. prep spay both surfaces
> with activater let dry ,
emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Anybody have an idea how...
>
> On 24.09.16 18:04, john mcintyre wrote:
> > Machine the boss and hub to a firm slide fit ( stops misalignment in
> > assemble) then use Loctite 680 or similar. prep spay both surfaces
> > w
On 24.09.16 18:04, john mcintyre wrote:
> Machine the boss and hub to a firm slide fit ( stops misalignment in
> assemble) then use Loctite 680 or similar. prep spay both surfaces
> with activater let dry , then apply Loctite and assemble ( do not
> waste time in assembly)
An off-thread questi
; From: ghesk...@shentel.net
> > To: emc-users@lists.sourceforge.net
> > Date: Fri, 23 Sep 2016 19:15:18 -0400
> > Subject: Re: [Emc-users] Anybody have an idea how...
> >
> > On Friday 23 September 2016 15:21:28 Gene Heskett wrote:
> >
> > > On Fri
esk...@shentel.net
> To: emc-users@lists.sourceforge.net
> Date: Fri, 23 Sep 2016 19:15:18 -0400
> Subject: Re: [Emc-users] Anybody have an idea how...
>
> On Friday 23 September 2016 15:21:28 Gene Heskett wrote:
>
> > On Friday 23 September 2016 04:34:35 Andy Pugh wrote:
> > &
On 09/23/2016 08:50 PM, Ken Strauss wrote:
> Is that "Wilbro" or "Winbro"? Any idea who sells it in Canada?
>
>
Whoops, sorry, it is Winbro (Winfield Brooks) and I think
most of the machine shop supply places ought to have it.
MSC does, I just looked. It is AlumTap, I added the dash by
mistake
Is that "Wilbro" or "Winbro"? Any idea who sells it in Canada?
> -Original Message-
> From: Jon Elson [mailto:el...@pico-systems.com]
> Sent: Friday, September 23, 2016 9:14 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Anybody ha
As far as dimensions go im not much help but heat i can hole heartedly
recommend. Aluminum moves a lot with temp. The rule of thumb is you can
heat any aluminum to 60 deg C (not quite burn your hands hot potato hot)
and not worry about affecting temper. You would be amazed how this small
amount
On 09/23/2016 06:38 PM, Dave Cole wrote:
>
> I have used the standard Tap Magic and Rapid Tap and the Tap Magic
> Aluminum is totally unlike the other cutting fluids.
> Tap Magic Aluminum is very thin stuff. I applied it with a paint
> brush.From the viscosity you would think that it would do
On 9/23/2016 6:57 PM, Gene Heskett wrote:
> On Friday 23 September 2016 09:58:03 Dave Cole wrote:
>
>> On 9/23/2016 9:30 AM, Gene Heskett wrote:
>>> On Friday 23 September 2016 03:47:51 Erik Christiansen wrote:
On 23.09.16 01:02, Gene Heskett wrote:
> So what I am looking for is a bb holde
On Friday 23 September 2016 15:21:28 Gene Heskett wrote:
> On Friday 23 September 2016 04:34:35 Andy Pugh wrote:
> > > On 23 Sep 2016, at 08:02, Gene Heskett
> > > wrote:
> > >
> > > gave up and put a 3/8
> > > drill in the holder. That worked for a starter hole and the bar
> > > then ran in and
On Friday 23 September 2016 09:58:03 Dave Cole wrote:
> On 9/23/2016 9:30 AM, Gene Heskett wrote:
> > On Friday 23 September 2016 03:47:51 Erik Christiansen wrote:
> >> On 23.09.16 01:02, Gene Heskett wrote:
> >>> So what I am looking for is a bb holder that will work with the
> >>> smallest QC ho
On Friday 23 September 2016 04:34:35 Andy Pugh wrote:
> > On 23 Sep 2016, at 08:02, Gene Heskett wrote:
> >
> > gave up and put a 3/8
> > drill in the holder. That worked for a starter hole and the bar
> > then ran in and tried to uniform the hole, looking decent
>
> Are you trying to use a bori
On Friday 23 September 2016 04:25:41 Gregg Eshelman wrote:
> Criterion boring bar with a square shank so it won't twist.
>
Looked that up, 63$ or a small bar, both 3/8" round shank, or 123$ for
their smallest indexable. On SS thats out of my pay grade. I think I'll
use one cutting edge of a 4 fl
On Friday 23 September 2016 04:18:10 Erik Christiansen wrote:
> This post's gone the long way.
>
> - Forwarded message from Sarah Armstrong
> -
>
> Date: Fri, 23 Sep 2016 09:01:07 +0100
> From: Sarah Armstrong
> To: Erik Christiansen
> Subject: Re: [Emc
On 9/23/2016 9:30 AM, Gene Heskett wrote:
> On Friday 23 September 2016 03:47:51 Erik Christiansen wrote:
>
>> On 23.09.16 01:02, Gene Heskett wrote:
>>> So what I am looking for is a bb holder that will work with the
>>> smallest QC holder. And will hold it solidly in the face of a 1
>>> horse mo
On Friday 23 September 2016 03:47:51 Erik Christiansen wrote:
> On 23.09.16 01:02, Gene Heskett wrote:
> > So what I am looking for is a bb holder that will work with the
> > smallest QC holder. And will hold it solidly in the face of a 1
> > horse motor's solid torque.
>
> My long boring bars ha
> On 23 Sep 2016, at 08:02, Gene Heskett wrote:
>
> gave up and put a 3/8
> drill in the holder. That worked for a starter hole and the bar then
> ran in and tried to uniform the hole, looking decent
Are you trying to use a boring bar without drilling a starter hole? I don't
think they are
Criterion boring bar with a square shank so it won't twist.
From: Gene Heskett
To: Enhanced Machine Controller (EMC)
Sent: Thursday, September 22, 2016 11:02 PM
Subject: [Emc-users] Anybody have an idea how...
Greetings all;
I just had a heck of a day. That round bar of alu f
This post's gone the long way.
- Forwarded message from Sarah Armstrong
-
Date: Fri, 23 Sep 2016 09:01:07 +0100
From: Sarah Armstrong
To: Erik Christiansen
Subject: Re: [Emc-users] Anybody have an idea how...
In-Reply-To: <20160923074751.GB3393@ratatosk>
On 23.09.16 01:02, Gene Heskett wrote:
> So what I am looking for is a bb holder that will work with the smallest
> QC holder. And will hold it solidly in the face of a 1 horse motor's
> solid torque.
My long boring bars have flats top and bottom, so they just go into the
4-way toolpost like th
On Friday 23 September 2016 02:02:03 hubert wrote:
> On 9/23/16 12:02 AM, Gene Heskett wrote:
> > Greetings all;
> >
> > I just had a heck of a day. That round bar of alu fell out of my
> > mailbox the middle of the afternoon, so I thought I would get
> > started on cutting out that custom timing
On 9/23/16 12:02 AM, Gene Heskett wrote:
> Greetings all;
>
> I just had a heck of a day. That round bar of alu fell out of my mailbox
> the middle of the afternoon, so I thought I would get started on cutting
> out that custom timing sprocket hub. Sawed off the length I needed
> (first cut on
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