I don’t normally regrind. It’s something I’ve always reserved for when setting up old tools or re-setting knackered edges.
But since moving to water stones for my sharpening (I’m still on with that water stone experiment), my usual methods have somewhat let me down. I will talk about them soon, maybe in a video. But for the water stones I had to change tactic, and switched to the micro bevel (or secondary bevel or whatever it’s called).
I quickly came to realise why this method of sharpening is so popular. It’s fast, very predictable and gives very good sharpness. But only if you respect the technique enough to regrind… and regularly.
For those not familiar to this method, it’s quite simple:
You grind your chisel, iron or whatnot to about 25 degrees…ish
Then sharpen to about 30-35 degrees…ish, creating the secondary bevel.
You get about 5 lovely fast, predictable, sharp, sharpens…ish
Then it progressively becomes less fast, less predictable, & less sharp.
You regrind the blade to 25 degrees and restart over.
Depending on the tool, I push to perhaps ten sharpens before regrinding, though I find it best to regrind sooner. Push your look and you’re on the grinder for longer. Also those look pushers take longer to sharpen, as the bevel grows, and are less sharp.
The method works a treat. But I sharpen a lot, which means I’m spending quite a lot of time on the grinder, so much so, that I’ve even shunted my stump up to the damn thing so I can sit whilst boring myself.
I wonder if my need to regrind so much is half due to my low tool approach. I’ll often use only one plane for an entire build, so naturally it’s getting all the welly. More irons equals less regrinding, or something like that. My chisel use is the same, I use my Splitproofs for nearly everything, so there going to need sharping more.
For those of you that use the secondary / micro bevel method, how many sharpens do you tend to get to a regrind? I appreciate it’s a guesstimate.