Tool Grinding Block

[jam2204055]

Also - here’s a block like I think OP was asking about. Shop made, not by me:
View attachment 439052
View attachment 439053

Exactly what I was talking about! Thank you bringing back Memories! I must say after grinding up your own threading tools like how I was taught it sure reinforces threading concepts to my students!

 

[jam2204055]

First of all thank you to everyone who contributed as you took me back to my apprentice years! After reviewing everyone's contributions I came across one response by Jwmelvin and the photos show the type of jig I was looking for. I am going to make some of these on the CNC and have my students grind up some threading tools and do some single pointing as part of our machining class. This is how I learned as an apprentice and also gives them some practice on the surface grinder to actually make the tool they will use to thread with. Kudos to everyone!

 

[William Lynn]

First of all thank you to everyone who contributed as you took me back to my apprentice years! After reviewing everyone's contributions I came across one response by Jwmelvin and the photos show the type of jig I was looking for. I am going to make some of these on the CNC and have my students grind up some threading tools and do some single pointing as part of our machining class. This is how I learned as an apprentice and also gives them some practice on the surface grinder to actually make the tool they will use to thread with. Kudos to everyone!

Wondering if having the students make the blocks manually would give them a better understanding of why the angles on the block are critical to grinding a proper threading tool?