Mauser Hump revisited - Page 2

John Sabato · 09-17-2004, 09:32 AM

Here you go... just happened to have a photo of that handy...

A.Mifsin · 09-17-2004, 10:20 AM

Thank you John..Now it is clear. Does it means that other lugers do not have it?

John Sabato · 09-17-2004, 11:17 AM

To the best of my knowledge, only Mauser produced Lugers have this characteristic on the stock lug. I do not recall any DWM, Simson, Erfurt or Krieghoff Lugers that I have either personally examined or see photographs of, having this condition on their stocklugs.

This hole was obviously produced by the end mill that was used to machine the stock lug groove... why Mauser chose to make the entry (or exit) point deeper is beyond my knowledge and limited expertise.

Pete Ebbink · 09-17-2004, 10:06 PM

John,

I am not sure when this Mauser "dimple" first appeared...I have seen G-Dates with and without the dimple...

Regards,

Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />

Thor · 09-17-2004, 10:08 PM

Don Hallock seemed to say that the early frames with out the dimple might be left over DWM frames.

ViggoG · 09-18-2004, 03:31 AM

John, Alfred, and All,
A possibility exists that the hole is to accomodate a different type of end mill.
Two Fluted end mills are usually ground in a center cutting configuration and can be plunged at the end if each machining pass to allow cutting on both in pass and out pass thereby saving "no cut returns" to the beginning of each cutting pass.
However Two Flute end mills do not have the cutting feed ability of the Four Fluted End Mill, which would be double that of the Two Flute for the same chip load per tooth.
Main Drawback is that 50 or more years ago four flute End cutting mills were far too expensive for this type of work.
To allow downfeed at the inner end of the groove there would have to be a drilled hole to allow a four flute end mill to be plunged.
This may be a possible answer to the question of "Why the hole?".
This may have been necessary to match production rates of these parts with matching critical parts.
JMO
ViggoG

A.Mifsin · 09-20-2004, 03:05 AM

Hi to all
For what is worth. My K date Luger is without the dimple but the G date has it.

A.Mifsin · 09-22-2004, 03:46 AM

Hi All,
My K date luger is without the dimple but has the Mauser hump.
If it is left over from DWM how it is that it has the Mauser hump? Which as far as I know only Mauser frames have it.
Alf

09-17-2004, 09:32 AM	#21
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,156 Thanks: 3,003 Thanked 2,308 Times in 1,098 Posts	Here you go... just happened to have a photo of that handy... __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*

09-17-2004, 10:20 AM	#22
A.Mifsin User Join Date: Dec 2002 Location: Malta Posts: 570 Thanks: 74 Thanked 12 Times in 12 Posts	Thank you John..Now it is clear. Does it means that other lugers do not have it? __________________ I prefer a Luger

09-17-2004, 11:17 AM	#23
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,156 Thanks: 3,003 Thanked 2,308 Times in 1,098 Posts	To the best of my knowledge, only Mauser produced Lugers have this characteristic on the stock lug. I do not recall any DWM, Simson, Erfurt or Krieghoff Lugers that I have either personally examined or see photographs of, having this condition on their stocklugs. This hole was obviously produced by the end mill that was used to machine the stock lug groove... why Mauser chose to make the entry (or exit) point deeper is beyond my knowledge and limited expertise. __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*

09-17-2004, 10:08 PM	#25
Thor User Join Date: Jun 2002 Location: Rio Rancho, New Mexico Posts: 4,583 Thanks: 958 Thanked 970 Times in 276 Posts	Don Hallock seemed to say that the early frames with out the dimple might be left over DWM frames. __________________ Thor's Luger Clinic http://members.rennlist.com/lugerman/ Ted Green (Thor Yaller Boots) 725 Western Hills Dr SE, Rio Rancho, NM 87124 915-526-8925 Email thor340@aol.com ----------------------------------- John3:3 Jesus answered and said to him, "Most assuredly, I say to you, unless one is born again, he cannot see the kingdom of God."

09-20-2004, 03:05 AM	#27
A.Mifsin User Join Date: Dec 2002 Location: Malta Posts: 570 Thanks: 74 Thanked 12 Times in 12 Posts	Hi to all For what is worth. My K date Luger is without the dimple but the G date has it. __________________ I prefer a Luger

09-17-2004, 10:06 PM	#24
Pete Ebbink User Join Date: Jun 2002 Location: The USA Posts: 5,919 Thanks: 0 Thanked 6 Times in 4 Posts	John, I am not sure when this Mauser "dimple" first appeared...I have seen G-Dates with and without the dimple... Regards, Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />

09-18-2004, 03:31 AM	#26
ViggoG RIP Join Date: Jun 2002 Location: South Side Virginia Posts: 534 Thanks: 0 Thanked 1 Time in 1 Post	John, Alfred, and All, A possibility exists that the hole is to accomodate a different type of end mill. Two Fluted end mills are usually ground in a center cutting configuration and can be plunged at the end if each machining pass to allow cutting on both in pass and out pass thereby saving "no cut returns" to the beginning of each cutting pass. However Two Flute end mills do not have the cutting feed ability of the Four Fluted End Mill, which would be double that of the Two Flute for the same chip load per tooth. Main Drawback is that 50 or more years ago four flute End cutting mills were far too expensive for this type of work. To allow downfeed at the inner end of the groove there would have to be a drilled hole to allow a four flute end mill to be plunged. This may be a possible answer to the question of "Why the hole?". This may have been necessary to match production rates of these parts with matching critical parts. JMO ViggoG

09-22-2004, 03:46 AM	#28
A.Mifsin User Join Date: Dec 2002 Location: Malta Posts: 570 Thanks: 74 Thanked 12 Times in 12 Posts	Hi All, My K date luger is without the dimple but has the Mauser hump. If it is left over from DWM how it is that it has the Mauser hump? Which as far as I know only Mauser frames have it. Alf __________________ I prefer a Luger