Trizact A45, A65 and plunge lines

ashwinearl

ashwinearl

Joined
Nov 9, 2006
Messages
522
Hi,
I am following a belt progression I saw in a previous thread. I think this is from A. Vigil.
VSM 885 Ceramics 50 or 100g
Hermes Aluminum Oxide 100g, 200g . These have a nice flex to them and when overhung off the platen, help me create a nice rounded top to the plunge

I then goto Trizact A45 and A65 for finishing, followed by 400 cork for final machine finish.

The problem I am having is going to the Trizact A series belts. I like the finish they produce, and like how long they last. They are much stiffer than the Hermes AO belts though.

I have issues in getting the area right in front of the plunge with them when I overhang the belt off the platen. Then if I bring them back to inline with the platen, it ends up messing the rounded top of the plunge.

I am thinking that I should just stay out of the plunge area with these, and uses higher grit AO belts with a little bit more flex in that area?

Any tips?
 
You can get them to do what you want by dressing the grit down on the edge and then rolling it over the edge with a piece of ceramic to loosen it up.
 
It just takes practice. I have never liked the “hang the belt over” technique to create a nice sweating plunge. This gives you no control and your at the mercy of belt and how it flexes. So I dress the edge to remove the sharp corner so it does not dig in. I track the belt to the edge of the platten and I just sweep the grind by hand.i have allrrady established this plunge cut with the roughing belt so it’s easy to falow with the finishing belts. It just takes practice. Relying on the belt hanging over the edge to give you repeatable results is not wise.
 
Are the edges of your platen radiused?
 
JTknives said:
I track the belt to the edge of the platten and I just sweep the grind by hand.i have allrrady established this plunge cut with the roughing belt so it’s easy to falow with the finishing belts. It just takes practice. Relying on the belt hanging over the edge to give you repeatable results is not wise.
Click to expand...
This would make a *great* video. hint hint
 
ashwinearl said:
No they are not. It is an A2 platen from Oregon Blademaker. It is unhardened and can be hardened.
Click to expand...
You can grind a radius on both sides of the platen. That helps give radiused plunges
 
You must log in or register to reply here.
Back
Top