I think that is a spiral point tap.
The flute is straight along the length of the tap then the flute is is
ground deeper toward the backside of the cutting edge.
AutomationDirect.com sells some really nice taps for reasonable amounts.
Dave
On 7/9/2021 8:32 PM, John Dammeyer wrote:
The sayin
Thanks.
I've got some really cheap metric ones coming from amazon. Just for aluminium
castings and to play with.
John
> -Original Message-
> From: Dave Cole [mailto:linuxcncro...@gmail.com]
> Sent: July-10-21 10:39 AM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Runaw
I haven't been following this thread too closely but why not use thread
forming taps? They work great in ductile materials such as aluminum and
there is no problem with chip clearing since there are no chips. Just be
sure that you drill the right size hole according to the tap manufacturer's
materi
The one in the picture came from Fastenal. When they discontinued selling them
and had them on clearance I purchased their inventory of 8-32 and 4-40 taps. I
scored a good supply of Balax (https://www.balax.com/) 2-56 taps from a local
flea market. I don't think the seller understood taps withou
Anyone have a user manual or data sheet for this encoder lying around somewhere?
Honeywell Disc Instruments Optical Shaft Encoder 252-2000-0BLP-TTL-LD-X4
John
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Looks like KBCTools has a few at reasonable prices
https://www.kbctools.ca/products/search/?Keyword=thread%20forming%20tap
Inexpensive KBC brand
https://www.kbctools.ca/itemdetail/1-363A-0326
They also have a brand name at quite a bit more.
https://www.kbctools.ca/itemdetail/16B-1420-03B
John
I've never used any form taps from KBC but R&N is a known brand. You'd think
that a tap without flutes would be cheaper!
Remember to drill the hole oversize. For example,
https://www.natool.com/wp-content/uploads/2019/06/tapdrillsizes-inmet_web_ca
tp113-116.pdf) suggests a #1 rather than #7 drill
I knew I'd need more spindle torque for tapping. That's why I made a two step
pulley for the spindle and the 1800W servo.
One tiny little problem.
http://www.autoartisans.com/mill/SpindlePulleyRawCasting.jpg
In thinking through the process to be able to pull the pattern from the sand
the lar
