Apologies if this is really stupid: I just received my new Jet mini lathe and Pinacle tools from Woodcraft. I have turned only once, many years ago. I honed the tools with some rouge and then used the lathe. My cuts are really really rough, and I think I'm just ripping the wood. How clean should I expect my cuts to be? Does the wood species matter in this? Is it that my tools are dull, or is my cutting technique poor, or both? Thanks, Steve
I'm going to guess that you are using your chisels and gouges as if they were scrapers. That will produce a rough finish and is the most common mistake beginners make. It is true that Scrapers are used with the tool held horizontally, so the cutting edge scrapes along the spinning wood. But, Chisels and Gouges are held with their handles dropped, pointing downwards. This causes the cutting bevel (the underside portion you honed) to rub on the wood, presenting the cutting edge to the wood.
Try this. Get a 2x4 and put it in a vise or clamp it to a table. Now, pick up your sharpened gouge and make a cut in the wood. Notice how you instinctively move the handle from vertical to an angle matching the cutting angle? That's the trick! It's just a little trickier with spinning, round wood, but the idea is the same.
I suggest finding a local turner to show you the basics, or get one of the turning videos. Dan
probably both tools and use of same... we all start like that... *g*
Honing is only effective if the tool is pretty sharp already.. otherwise, you're not honing an edge, you're polishing it and it looks pretty, but is also pretty dull...
Try browsing some of these sites for a jump start on your turning experience... and welcome to the addiction!
Steve, Not quite! For gouge work, keep the tool rest close and a little below the centerline. That will support the tool well and put the cutting edge on the centerline. But don't just shove the gouge into the wood! Try this. Hold the gouge with handle pointing toward the floor and cutting edge toward the ceiling, and touching the tool rest. Slowly raise the handle. As you do the bottom of the gouge will rub on the wood. Keep raising the handle, and the place were the wood rubs will move toward the cutting edge. When you begin to get shavings, freeze! That's the proper angle. What you want is the wood rubbing lightly on the bevel.
All of them matter, and if you read, reading will help. I'd look for something besides a "How to turn X" book to get started. You're interested in the basics that will allow you to turn X,Y and Z. Frank Pain _The Practical Woodturner_, though out of print, has to be one of the best on how tools cut and how wood "prefers to be cut. "
Cut , then peel is the technique. Anchor the tool _firmly_ on the toolrest , match or even seat the Bevel to the contour of the wood, then pivot around your fulcrum to make the Cut that starts the peel. I like to lock up the small muscles, using a shift in weight to make the entry. Saves a lot of bounce and rip.
Thanks again for all the advice. I spent some time this weekend practicing and trying out some of the recommendations posted here. I found that rubbing the bevel is very important...that's the tip I found the most helpful. This allowed me to really peel the wood off. I was getting a really nice edge on some maple. I've read up on sharpening and ordered a 60 grit Norton white wheel for a 1750 RPM electric motor I have. My tools were fairly sharp on Friday evening and now they need sharpening...hope that wheel gets here soon. So here is another question: If I were to buy one introductory video (perferably on DVD) what should it be? I'd like something that is packed with information on turning techniques and sharpening. Thanks again, Steve
The first thing to remember (and you didn't use the bad word) - DO NOT think of the wheel and motor as a GRINDER! This should be used and treated as a SHARPENER! Grinders are used to take off lots of metal, Sharpeners are used to put a good edge on a tool! They look the same but the reason to use one and the attitude when you are using it make all the difference.
Yeah, what he said. When you look at the edge in with light shining from behind your head, and you can see a shiny metal line where the edge is, that means it's dull, because the light is reflecting off a radius. When it's really sharp, the edge is so fine you should be hard pressed to see any line of reflected light on the edge.
I use 60 grit wheels only to really change the shape of a tool or grind back a long way from a bad chip on the tool. Grinding with 60 grit can require a lot of honing with finer stones to smooth out the ridges and valleys of the edge left by the wheel. That said, a light touch and smoothing the wheel with a dresser can still produce great edges for lots of roughing work, especially for scrapers, where many people love to keep the burr on the edge. Once you've mastered the 60 grit wheel and wish it were sharper, you might try 100 or 120.
I do it both ways (burr/ no burr) depending on the wood. For really punky wood that's spalted, you almost have to scrape to get the best finish before you sand. Trying to cut punky wood gives more tear outs than a razor sharp scraper, no burr, just honed to the point you can shave hairs off your arm.
In fact, until you can master cutting methods, you'll probably get your cleanest surface (by which I mean not just smooth, but a fair line on the profile that doesn't have bumps and valleys) with a razor sharp scraper. Often this need -- to have a fair line on profile -- trumps smooth surface and minimal sanding.
It's hard to cut a fair curve with a gouge, even when it's sharp, and takes a lot of practice. I've been turning 24 years and still have to clean up some gouge work with a good scraper now and then. It gets harder as the diameter of the wood gets larger, since it takes longer for the wood to come around, and you have to remain stationary longer.
Hmm- this pertains to non-hollow ground edges? A hollow ground edge always shows a shiny line at edge and heel. Of course even a non-hollow ground edge can shine if you've changed the sharpness angle. They call it a "microbevel."
No, hollow ground. I'm talking about looking at it from the angle that bisects the angle of the cutting edge, not looking at the bevel straight on. Any edge, if sharp, the shiny line should be nearly invisible. You want to sharpen until the shiny line (radiused edge) disappears. If light reflects off the "edge" back into your eye when the edge is pointed at your eye, that means there is metal that is parallel to your eye, in other words, not aligned with either the bevel or the tool surface, in other words, not sharp.
I mean point the tool at your eye periodically while you're turning: eye ball ) < edge points at the eye and a shiny line will indicate the tool is getting dull. the line will get smaller and disappear as you hone, If the radius is really bad, like from super hard wood, you might grind until the shiny line disappears then hone, but sometimes just a few strokes with the stone is enough without the grinder. Or if the grind is coarse, you'll see a crooked line that gets straighter as you hone.
George is talking about this viewing angle: eye ball ) /\ bevel and then you'll see much wider shiny lines at the edge and heel of the hollow ground, which get wider as you hone.
OK, sounds like you've got something that works, though I still can't see the logic nor do I recognize the effect. I sharpen based on tactile feedback, rather than looking at gouges nose on.
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