Search found 2175 matches
- Wed Apr 17, 2024 8:07 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
150f per minute is slower than holding in still air and is not ideal for knife applications for reasons previously shared about PEC precipitation on PAGB. Unfortunately, the spirit of this thread is not a heat treatment class about best practices So I'm not going to get into any more detail than tha...
- Tue Apr 16, 2024 6:37 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
- Tue Apr 16, 2024 3:21 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
He said "at 0.160" it's too thick, get to grindin."Bolster wrote: ↑Tue Apr 16, 2024 2:58 pmDeadboxhero wrote: ↑Tue Apr 16, 2024 12:17 pmTrevor inspecting the blade before moving on to grinding.
Nothing escapes his scrutinizing gaze.
Did Trevor find any issues or problems ??
- Tue Apr 16, 2024 1:16 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Quad BZrowsN1s wrote: ↑Tue Apr 16, 2024 1:12 pmhe's getting big!Deadboxhero wrote: ↑Tue Apr 16, 2024 12:17 pm
Trevor inspecting the blade before moving on to grinding.
Nothing escapes his scrutinizing gaze.
- Tue Apr 16, 2024 12:17 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Trevor inspecting the blade before moving on to grinding.
Nothing escapes his scrutinizing gaze.
- Tue Apr 16, 2024 12:15 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
- Tue Apr 16, 2024 12:09 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Heat treatment complete
Final hardness average after tempering was 64.5rc
Final hardness average after tempering was 64.5rc
- Tue Apr 16, 2024 2:39 am
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Warming back up to room temperature from -320F
Surfacing to a high finish with diamond abrasive belts
Testing between cycles.
Surfacing to a high finish with diamond abrasive belts
Testing between cycles.
- Mon Apr 15, 2024 5:03 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
- Mon Apr 15, 2024 2:58 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Hey Shawn, What did you use for the quench? sal https://i.imgur.com/nFq31rE.jpeg Large aluminum plates with forced air to race to under 1000f to prevent proeutectoid carbide precipitation on prior austenite grain boundaries. https://i.imgur.com/dRvB3v5.jpeg Water when under~1000f to speed the cooli...
- Mon Apr 15, 2024 2:14 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
All steel chemistries have a "chemistry range" these different variations of chemistry within that tolerance that can affect what goes into solution at a given temperature which will affect the hardness even at the same temperature requiring a shift up or down in temperature to match hardn...
- Fri Apr 12, 2024 9:53 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
CPM S60V https://i.imgur.com/mttR3S8.jpeg CPM S90V https://i.imgur.com/L26ZBcM.png Bohler M390 https://i.imgur.com/lCmv7n2.png The color metallography colors the different carbide types differently, CPM S60V has a higher volume of vanadium carbides than M390... I've not seen color metallography bef...
- Fri Apr 12, 2024 4:43 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
I know the price of most PM steels in Europe and they're not cheap, especially CPM in low quantity (Bohler is closer so that's normal). I still felt like the cost was high for one knife but then I saw the size of the knife, understandable. :squinting-tongue Yes, it's funny because a lot of us start...
- Fri Apr 12, 2024 4:41 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Shawn, Was the micrograph for S60V done on Sal’s knife, i.e. was it dome pre-heat treat? If so, I thought the heat treating process changed the microstructure. I’ve heard expression like “grain size” and “grain growth” with regards to heat treat. I certainly could do metallography on the knife but ...
- Fri Apr 12, 2024 4:33 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Good thread! I knew that you were heavily involved in knife making, but had no idea you had all of that equipment. Do you take orders for knives at this time? I've been brought to a crawling pace with raising two beautiful children. They are currently 1 and 3 years old so things will pick up when t...
- Fri Apr 12, 2024 4:30 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Fascinating stuff, Shawn. Thanks for the micrographs, those are really interesting to see! You pull no punches when it comes to big kitchen knives with the high carbide steels. That big 15V kitchen knife you made some time back still haunts my thoughts from time to time (in the best way). Thank you...
- Fri Apr 12, 2024 4:28 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
Shawn, Thanks for sharing, always good to see how your knives are made. What are you going to use for a handle? I have a lot more luck working with wood and have a ton of fun making handles for my mules. I have some Gabon Ebony I want to try next but running out of excuses to buy more mules. Can’t ...
- Fri Apr 12, 2024 4:27 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
When you heat treat this blade, are you using a "recipe" that is published by others? No Do you use your own recipe arrived at through your own experimentation? My own Or are you able to look at the specs, and intuitively know what you need to do? Institution doesn't work, without measure...
- Thu Apr 11, 2024 7:14 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
While the furnace is heating, it we'll be nice to share some color metallography I made of CPM S60V and what excites me about it. The microstructure is actually finer than CPM S90V and M390. https://i.imgur.com/LsYRECc.png CPM S60V https://i.imgur.com/mttR3S8.jpeg CPM S90V https://i.imgur.com/L26ZBc...
- Thu Apr 11, 2024 7:02 pm
- Forum: Spyderco General Discussion
- Topic: Building a Custom Knife for Sal: CPM S60V
- Replies: 77
- Views: 3570
Re: Building a Custom Knife for Sal: CPM S60V
HI Shawn, Thanx much. Looking forward to it. How hard will you make it? Thanx for the kind words. sal Well, thank you for sharing the passion with all of us. As for the hardness, we'll measure the hardness on this piece when it is done. The furnaces are heating up. 309 SS foil is ready. Should be a...