What's going on in your shop? Show us whats going on, and talk a bit about your work!

[Lorien]

I know a lot of peeps don’t like the coil spring. My KMG Classic had one and I never had a problem with that feature. I actually prefer it over the gas strut.

oh, I like it- because it's a zero problem component! Thinking on swapping my gas shock out for one

 

[Crag the Brewer]

oh, I like it- because it's a zero problem component! Thinking on swapping my gas shock out for one

Having an actual spring tensioner, and a direct 56C mounting was my main criteria for a grinder...... Everything else didn't really matter.

 

[Crag the Brewer]

Just got done shaping the handle off the grinder... Now to finishing by hand! View attachment 2108611View attachment 2108612

Do the liners make this knife a Right-hand, or a Left-hand knife???

 

[Lorien]

Having an actual spring tensioner, and a direct 56C mounting was my main criteria for a grinder...... Everything else didn't really matter.

a linear rate spring makes more sense to me than rising rate for that application

 

[Crag the Brewer]

a linear rate spring makes more sense to me than rising rate for that application

I just didn't like the idea of all the grit and grime wearing out the shaft/seals..... I've heard that knife grinding could be an abrasive environment.

 

[DanF]

Roughly worked up three small guys to put the new Pheer 454 through its paces today. The two on the left are hollow ground, something I have never done before and that is going to be a challenge for me, lol.

The far left is 8670 @ RHC 60
The two on the right are 52100 @RHC 62 (That Jen-Ken kicks butt!).

 

[JamesBro]

started grinding at this thing today, (my first forged blade);

Nice, its a fun way to make a knife, this is my first attempt this week at a paperweight. (required, so I heard..)

 

[JamesBro]

Another couple, Having a tough time making this ironwood shine..

 

[HSC ///]

Finished and delivered the Elmax slicer. 650 mm cutting edge.

 

[dwaterfield]

My first San Mai project is nearly done. I have been informed that the handle is too chunky so I need to do a bit more shaping there, but very happy with how it is coming out.

This is 15n20 around a1095 core, etched in ferric chloride. Red oak and brass for the handle.

A big thank you to Stacey and everyone that gave me advice. On my first attempt they helped me diagnoseovercome what turned out to be a bad batch of steel.

https://flic.kr/p/2omrrS7

 

[Richard338]

Turned 6' of Magnacut into 3 BBQ sets.
(only rough profiling so far)

 

[Scaniaman]

Threw out the old platen and made a new one. 15 mm aluminium, and pyroceram.

 

[Natlek]

So , why we don t use tempered glass for this application .It is much harder and scratch resistant , it is stronger four time then ceramic glass and can take very hard blows , when break it shatters into a thousand pieces. ....... ?

 

[Scaniaman]

So , why we don t use tempered glass for this application .It is much harder and scratch resistant , it is stronger four time then ceramic glass and can take very hard blows , when break it shatters into a thousand pieces. ....... ?

I agree. I haven't been able to source it at the right size and reasonably priced. One of my suppliers has the pyroceram, and at a good price so

 

[Bühlmann]

So , why we don t use tempered glass for this application .It is much harder and scratch resistant , it is stronger four time then ceramic glass and can take very hard blows , when break it shatters into a thousand pieces. ....... ?

Because pyroceramic materials can handle roughly 3x the constant heat load of tempered glass and can withstand much higher transfer rates for those high temperatures. I also don’t see shattering into thousands of potential projectiles (unable to be even partially contained by a shelf) as a benefit for grinding applications.

 

[SwissHeritageCo]

Another couple, Having a tough time making this ironwood shine..

I prefer the matte finish myself

 

[Stacy E. Apelt - Bladesmith]

Just to clarify about a glass platen:
A "glass" platen for a grinder is pyroceramic glass. It can withstand around 1500°F without breaking. It is very hard (Rockwell 60) and strong when glued to a solid backing plate. It is designed for high heat situations like fireplace doors. The main reason for using it on a grinder is it is very flat, cheap, and readily available. I hear people say they wear it down fast. I have only ever replaced a pyroceramic platen when I broke it by setting the arm down on the floor too hard. I never saw any wear on the surface otherwise.

Tempered glass is designed for windows and entry doors to resist impact. When the impact is greater than its yield strength (about 3 times the IMPACT resistance over pyroceramic) it is designed to shatter into thousands of 1/4"/6mm pieces with no sharp points. It isn't harder, just tougher than pyroceramic glass.

Since a glass lined platen should not be receiving impact, that is a moot point. What a platen does receive is considerable heat. Tempered glass would be very inadequate for many of us who do hogging of blades.

 

[Crag the Brewer]

I made a mount for my new Snap loc setup.
I still have a few things to figure out?

 

[REK Knives]

Just to clarify about a glass platen:
A "glass" platen for a grinder is pyroceramic glass. It can withstand around 1500°F without breaking. It is very hard (Rockwell 60) and strong when glued to a solid backing plate. It is designed for high heat situations like fireplace doors. The main reason for using it on a grinder is it is very flat, cheap, and readily available. I hear people say they wear it down fast. I have only ever replaced a pyroceramic platen when I broke it by setting the arm down on the floor too hard. I never saw any wear on the surface otherwise.

Tempered glass is designed for windows and entry doors to resist impact. When the impact is greater than its yield strength (about 3 times the IMPACT resistance over pyroceramic) it is designed to shatter into thousands of 1/4"/6mm pieces with no sharp points. It isn't harder, just tougher than pyroceramic glass.

Since a glass lined platen should not be receiving impact, that is a moot point. What a platen does receive is considerable heat. Tempered glass would be very inadequate for many of us who do hogging of blades.

Good info Stacy, thanks for that. I use pyroceram but on mine but I think since I wet grind it's a little harder on it... I periodically (every 3 months or so) lap it flat again on a diamond plate and replace it every year or so. But that's hundreds of blades by that point. And I'm using some high pressure when grinding under flood coolant with a moen jig (since angles are locked)

 

[evergreensSequoiaseucalyptusandOaks]

~ withdrawn