Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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.

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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,

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

ntel.net> > 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 Elson wrote: > >> On 09/24/2016 01:58 PM, Gene Heskett wrote: >>> 43/25.4

Re: [Emc-users] Anybody have an idea how...

ycles don't want anything to do with the stuff and only take it at a deeply discounted rate. - Original Message - From: "Gene Heskett" <ghesk...@shentel.net> To: emc-users@lists.sourceforge.net Sent: Sunday, September 25, 2016 1:29:29 PM Subject: Re: [Emc-users] Anybody h

Re: [Emc-users] Anybody have an idea how...

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" <ghesk...@shentel.net> To: emc-users@lists.sourceforge.net Sent: Sunday, September 25, 2016 1:29:29 PM Subject: Re: [Em

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 3.63" > > 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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

t Sent: Saturday, September 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 >

Re: [Emc-users] Anybody have an idea how...

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

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 , then apply Loctite and assemble ( do not > waste time in assembly) An off-thread

Re: [Emc-users] Anybody have an idea how...

es job) > > > > 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: > &

Re: [Emc-users] Anybody have an idea how...

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: > > &

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

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 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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

stron...@gmail.com> > To: Erik Christiansen <dva...@internode.on.net> > Subject: Re: [Emc-users] Anybody have an idea how... > In-Reply-To: <20160923074751.GB3393@ratatosk> > References: <201609230102.13980.ghesk...@shentel.net> > <20160923074751.GB3393@ratatosk

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

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

Re: [Emc-users] Anybody have an idea how...

This post's gone the long way. - Forwarded message from Sarah Armstrong <sarahj.armstron...@gmail.com> - Date: Fri, 23 Sep 2016 09:01:07 +0100 From: Sarah Armstrong <sarahj.armstron...@gmail.com> To: Erik Christiansen <dva...@internode.on.net> Subject: Re: [Emc-u

Re: [Emc-users] Anybody have an idea how...

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