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Dorno

Dorno

Member
Joined
Apr 18, 2009
Messages
185
Location
Newcastle Australia
I am wondering if anyone here can help me out with some information.
I purchased several of the Triangle Carbide cutters from captain Eddie Castlin so I could make another tool to add to what I already have now the problem I am having is how much of the triangle cutter should hang over the end of the steel bar ? eg how far should it protrude past the bar. I am concerned that if I make it to far it will shatter if it end up under pressure?
Before you say ask Eddie I have tried this on several occasions now through facebook because I have him as a friend and I know he has read my messages because facebook tells me that when the message has been read but I have not been able to get ANY answer at all so if someone could help me it would be greatly appreciated ?

Kind Regards Ian
 
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Just guessing here, but the engineer in me says "The overhang should be at or less than 1/2 the distance from the point to the edge of the hole."
But then I'm an electrical engineer, so what do I know.
 
There are other triangular carbide tipped tools made and shown on YouTube videos and other places but for me, I would be Googling "triangular carbide tipped tools", I'm sure you will get a few suppliers and even manufacturers of these type tools where you have plenty of images of how they should look, easy pizzy...!:wink:

Cheers
George
 
Magicbob said:
Just guessing here, but the engineer in me says "The overhang should be at or less than 1/2 the distance from the point to the edge of the hole."
But then I'm an electrical engineer, so what do I know.
Click to expand...
is that similar to saying that the ID of a pipe should not exceed the OD the pipe?
 
Hi Ian, I've made several of my own and set the end of the bar about 1.5mm-1.75mm back from the cutter tip. I also ground the bottom edge about 10 degrees back from the top to give extra clearance.
Hope this helps.
Kryn
 
Do a side view analysis of the cutter/mount "system" you are designing. Plan for the minimum overhang that will allow clearance needed to do the job. Do as Kbs Pensmore (Post 6) did with undercut leading edge on tool bar.
Steve
 
I have no idea and I'll not ask if you contacted Mr. Castlin. But I will ask, "Will you purchase from Captain Eddie again? Good luck and I hope you get your question answered.
Do a good turn daily!
Don
 
On the cutter tip you have a bevel the bevel should be supported right there at the bottom edge of the angle .. carbide is not very strong is very brittle so you need all the support she can get for the bevel comes back that's where you want it....
 
Give him a call. He is very friendly. I don't think he is very facebook savvy so that is not the best ways to communicate with him. He usually answers my emails fairly quickly and the times I called he has picked up.

Also, I think he did a youtube video on making a carbide tool if I remember correctly. He might give dimensions in that. Sorry I can't search for it, youtube is blocked here at work.


I have one of his bars, I can meaure it when I get home any let you know where he puts the screw. I don't think I have the triangle cutters though.
 
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+1 on calling him. He's quite friendly and has recently retired so it should be easy to get in touch (he's a neighbor).


I have a square rougher from him... the one thing I didn't like was the single cut in the bar for the insert. The other I have has a 2 step cut that creates a shoulder that holds the insert square to the bar. The way the bar came allowed the insert to turn a bit as you screwed it down. And the inserts from him are some of the sharpest I've had! Little sucker will cut the heck out of you if you try to hold it from cocking sideways will tightening... Easy fix - I just ground another step to hold it. BUT be careful while doing it to get the spacing from screw hole to shoulder right.

Edit:

You can kind of see what I'm talking about...

Cap't Eddie's:
DSCN2488.13565044_std.JPG


vs.

105660-img.jpg


See how the insert is held by 2nd one? It's got 2 steps ground.


Oh and I also ground more of an undercut to the cutter end.
 
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