G'day all.
I'm looking at mounting three discs on a lathe arbor I've had made.
The purpose is to charge two with honing compounds, in an attempt to polish gouge bevel and skew bevels, to bring them up to say 1000g or better finish. The third I will profile for gouge flutes, for a one-time polishing out of milling marks, and subsequently clean and recharge simply to take off the burr.
What I'm trying to do here is the replicate to a modest degree the fine edges that flatworkers get on their plane irons and bench chisels, by shaping and then honing/polishing both the planes that form an edge.
This is a proof of concept exercise.
Now we turners often just take a tool off a dry grinder and have at a lump of wood. Downunder the finest 8" wheel is 80 grit, and 120 in 6".
There's clearly some advantage in getting a less ragged edge than those will do. And there's examples in the history of woodturning of honing - with a hand held stone, hard felt wheel, or even a leather wheel with honing compound on a Tormek.
My question is for the abrasive tech-savvy.
Could you go from say an 80g finish to 1000g in two steps using honing crayons or diamond paste, applied to the edge of MDF, hardwood, maybe hard felt discs mounted on the lathe arbor? Or maybe a very true disc edge with 3M micro-abrasive glued to the rim?
Downunder we have a range of honing compound sticks of diff colors but I can't discover the particle sizes. Veritas make a green stick but ditto. The Tormek paste is a mix of 3, 2 and 1 micron Alox particles - a bit too fine.
Now I have a reason for an array of discs used edge-on mounted on the lathe. Because if this could work, it would be a simple job of getting a 12mm diam rod in front of them, mounted from the tool rest holder, so you could use your Tormek or Jet jigs to replicate and hone a gouge fingernail grind that you'd formed using the BGM in front of your dry grinder.
(And HSS tool users don't need wet grinders so we could save ourselves a bundle by unbundling wet grinder technology: the jigging from the wet grinding).
Now please, no debate about the merits of honing/polishing. That's not what this post is about.
I'm looking at mounting three discs on a lathe arbor I've had made.
The purpose is to charge two with honing compounds, in an attempt to polish gouge bevel and skew bevels, to bring them up to say 1000g or better finish. The third I will profile for gouge flutes, for a one-time polishing out of milling marks, and subsequently clean and recharge simply to take off the burr.
What I'm trying to do here is the replicate to a modest degree the fine edges that flatworkers get on their plane irons and bench chisels, by shaping and then honing/polishing both the planes that form an edge.
This is a proof of concept exercise.
Now we turners often just take a tool off a dry grinder and have at a lump of wood. Downunder the finest 8" wheel is 80 grit, and 120 in 6".
There's clearly some advantage in getting a less ragged edge than those will do. And there's examples in the history of woodturning of honing - with a hand held stone, hard felt wheel, or even a leather wheel with honing compound on a Tormek.
My question is for the abrasive tech-savvy.
Could you go from say an 80g finish to 1000g in two steps using honing crayons or diamond paste, applied to the edge of MDF, hardwood, maybe hard felt discs mounted on the lathe arbor? Or maybe a very true disc edge with 3M micro-abrasive glued to the rim?
Downunder we have a range of honing compound sticks of diff colors but I can't discover the particle sizes. Veritas make a green stick but ditto. The Tormek paste is a mix of 3, 2 and 1 micron Alox particles - a bit too fine.
Now I have a reason for an array of discs used edge-on mounted on the lathe. Because if this could work, it would be a simple job of getting a 12mm diam rod in front of them, mounted from the tool rest holder, so you could use your Tormek or Jet jigs to replicate and hone a gouge fingernail grind that you'd formed using the BGM in front of your dry grinder.
(And HSS tool users don't need wet grinders so we could save ourselves a bundle by unbundling wet grinder technology: the jigging from the wet grinding).
Now please, no debate about the merits of honing/polishing. That's not what this post is about.
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