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Mauser K98 blueprints

Hi!

I'm looking for those sizes too, and I'm not having any luck finding them yet.


Thanks.
Alright, whilst looking over the docs for the receiver I could not find any reference to the dimension you pointed out for the bolt camming surface, and thus I went to the bolt documents to see if I could reverse engineer it. So far as I can tell, I think I actually do have that dimensioning correct, but I am not sure; however, when looking over the bolt doc I translated this text: 1691275643585.png
In google translate, which yielded "These sloping surfaces on the warts of the foot of the comb stem are part of a screw thread with a pitch of 40mm v. match those of the sleeve". I am gonna try to figure this out, I'll report back what I come across.
 
Hi!

I'm looking for those sizes too, and I'm not having any luck finding them yet.


Thanks.
What dimensions are you looking for?
Alright, whilst looking over the docs for the receiver I could not find any reference to the dimension you pointed out for the bolt camming surface, and thus I went to the bolt documents to see if I could reverse engineer it. So far as I can tell, I think I actually do have that dimensioning correct, but I am not sure; however, when looking over the bolt doc I translated this text: View attachment 357416
In google translate, which yielded "These sloping surfaces on the warts of the foot of the comb stem are part of a screw thread with a pitch of 40mm v. match those of the sleeve". I am gonna try to figure this out, I'll report back what I come across.
Schnitt E-F in the receiver drawing lists these cam surfaces, which are the 40mm for the 3 lugs and the cam surface on the bolt handle. The quoted section from the bolt is the corresponding parts. Hülse being the receiver, the timing and distance on these is critical to a good functioning action.
 
What dimensions are you looking for?

Schnitt E-F in the receiver drawing lists these cam surfaces, which are the 40mm for the 3 lugs and the cam surface on the bolt handle. The quoted section from the bolt is the corresponding parts. Hülse being the receiver, the timing and distance on these is critical to a good functioning action.
Which cut views are you referring to in the receiver document(s)? Schnitt E-F from 'receiver lr.jpg' shows no cam surface dimensions? I need to revisit Solidwork's camming surface client, I don't have a huge amount of experience on it.
 
"Diese Flächen sind Teile eines Schrauben Ganges mit 40 mm Steigung von einer radialen Erzeugenden"
"These surfaces are parts of a helix with a pitch of 40 mm from a radial generatrix"

This is shown in cutaway E-F.

German drawings, even today, sometimes lack information, that requires intrinsic knowledge of what is being produced. Whether that knowledge be the mating parts, use, post processing, etc. Dimensions are not explicitly called out like on most US drawings. Parts are still made to gauges and mating parts.

When I model cam surfaces, (I'm poor I don't have Solidworks), I model the helix as a separate body so that I can adjust the location, rotation, and size, and then use that body to cut the cam surface.
 

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"Diese Flächen sind Teile eines Schrauben Ganges mit 40 mm Steigung von einer radialen Erzeugenden"
"These surfaces are parts of a helix with a pitch of 40 mm from a radial generatrix"

This is shown in cutaway E-F.

German drawings, even today, sometimes lack information, that requires intrinsic knowledge of what is being produced. Whether that knowledge be the mating parts, use, post processing, etc. Dimensions are not explicitly called out like on most US drawings. Parts are still made to gauges and mating parts.

When I model cam surfaces, (I'm poor I don't have Solidworks), I model the helix as a separate body so that I can adjust the location, rotation, and size, and then use that body to cut the cam surface.
Hey!
Yes, I paid attention to it, that the spiral pitch is 40 mm I realized that. But I am interested in what distance it should be or from what angle this spiral should start.
Looking forward to the next drawings.
Thank you.
 
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But I am interested in what distance it should be or from what angle this spiral should start.
This is what I was explaining in my previous post, these dimensions are not explicitly called out. Whether more prints existed, they were cut on fixturing that set the dimensions with only a little variation, or were cut using setup gauges, I do not know. The dimensions for the reference faces are there, but not the cam's themselves. These are in effect "high level" drawings, not boots on the ground manufacturing drawings. In the production environment, it is likely that individual work cells, or individual machinists, or certainly the masters of a section would have had more specific information.

I've cut cocking cams on bolts, I've machined cocking pieces and bolt shrouds, firing pins, etc. None of the prints explicitly call out all the information. Some of the information is "wrong". This is not uncommon, even today.
 
This is what I was explaining in my previous post, these dimensions are not explicitly called out. Whether more prints existed, they were cut on fixturing that set the dimensions with only a little variation, or were cut using setup gauges, I do not know. The dimensions for the reference faces are there, but not the cam's themselves. These are in effect "high level" drawings, not boots on the ground manufacturing drawings. In the production environment, it is likely that individual work cells, or individual machinists, or certainly the masters of a section would have had more specific information.

I've cut cocking cams on bolts, I've machined cocking pieces and bolt shrouds, firing pins, etc. None of the prints explicitly call out all the information. Some of the information is "wrong". This is not uncommon, even today.
It makes sense to me now. I hope Bruce has the blueprints. I'm counting on him.
 
Good day to all forum members!
I would like to ask if anyone could share the following drawings. I would be very grateful.
 

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Hello Bruce!

Found the blueprint in your book. Can you share this blueprint 3MC 6901-21?

Thanks!

Best regards.
 

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Hi all,

Are there no blueprints of the k98k (large ring) barrel? I have a K98k with a very bad barrel. I am a cnc programmer and machiner and i want to make a new one from a blank barrel.
 
Here is another update, found the time to get far more done than last time:
View attachment 356366
Next will be the internal camming surfaces, the trigger and firing pin components, the chamber area, and then finally the fillets/finish removing the wall(that you can see).

If all goes well I'll see if I can get a prototype made on a plastic 3d printer, and check that against multiple mauser 98 bolts for function. While that is happening I'll work on the bolt components.
beautiful model, how did you come up with the plan to start modeling, was it done in fusion 360? Could you show some more progress?
I'm trying to model in fusion but it's still confusing to deal with this technical information, I tried in 3dsmax in a more free way, but I want something with a little more precision
 
beautiful model, how did you come up with the plan to start modeling, was it done in fusion 360? Could you show some more progress?
I'm trying to model in fusion but it's still confusing to deal with this technical information, I tried in 3dsmax in a more free way, but I want something with a little more precision
I work in Autodesk Inventor, have been working in it for over five years now. Fusion360 is very similar to it. But in Inventor I think there are more options. And there are a lot of tutorials on YouTube. If you think of trying it, I can help you in any way I can.
 
After a few days trying to understand the design, studying fusion and trying to model it, there are still several parts that I couldn't understand very well, it's not very accurate but I think it's pretty cool
 

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Happy New Year, everyone! I wish everyone good health, prosperity and coziness to the family.
As shown in the drawing, I used a spiral with a pitch of 40 mm.
 

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beautiful model, how did you come up with the plan to start modeling, was it done in fusion 360? Could you show some more progress?
I'm trying to model in fusion but it's still confusing to deal with this technical information, I tried in 3dsmax in a more free way, but I want something with a little more precision
Sorry it has been so long without updates guys.

I work in Solidworks, and my general plan before has been to make the primary "body" of the part, and then add in the actual main portions of the model from that. Best way to describe it is like these receivers would be made themselves, with a forging of the outer dimensions of the receiver ring and then the smaller diameter of the rest of the forging, along with the curvature on the bottom where it fits into the stock, after this I cut out the bolt geometries. Only exception to the above is the 'tabs' which hold the extractor assembly in place, I am pretty certain they were braised in place, though it could be welding.

I'll be getting back onto this project after these two weeks. I've been in a state of business with school(as well as procrastination) that I don't intend to fall into, also I got a hobbyists license of solidworks as well as a new computer which can handle the fifteen quintillion fillets that ol' Paul put on the thing.

One final interesting realization that I am not sure is correct. Does anyone know if the Mauser 98's forging is identical to the Gewehr 88's? It looks extremely similar from looking at them in gun stores/shows, but I didn't have my calipers at the time to be certain. It looks like the same forging dies were used for both, with different machining done to differentiate the two actions.
 
Would you have the front sight blade blueprint? I need that one part and can't find the blueprint for it anyplace. I guess people think it's too minor or something.
 

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