Thread: Made myself a cone thingy today.

Good thinking 99


An improvement would be to make it stepped

Originally Posted by apricotripper

Spose all you blokes have already got cone thingys

Nope.
Will have one soon.

Originally Posted by apricotripper

To quickly set the calipers. Got the idea from a book I'm reading at the moment. I turned it from scrap and have attached it to the side of the lathe. Spose all you blokes have already got cone thingys

Nuh . .. might make 2 one for imperial and one for metric

Somewhere I have also seen an thingo for inside measurements, It was actually just a set of holes in a board drilled out with forstner bits.

it going on the list.

might get to it by next christmas

.

I like your idea funkychicken. Will put it back on the lathe and step it all before the pencil marks smudge out. and do it again in pen.

I'd leave it as it is Jake - how else will you get a half size (a tad bigger etc!) between your markings

Jake... What are you doing on a lathe? Have you decided to give up woodworking for a while?

Originally Posted by TTIT

I'd leave it as it is Jake - how else will you get a half size (a tad bigger etc!) between your markings

I spose. your right. Its not really something that needs to be that accurate anyway eh. Just for sizing in, for between profiles.

Originally Posted by Lignum

Jake... What are you doing on a lathe? Have you decided to give up woodworking for a while?

well I should. There's no money in it. I'm going to make a few chairs Lignum with lots of spindles.

Originally Posted by apricotripper

I spose. your right. Its not really something that needs to be that accurate anyway eh. Just for sizing in, for between profiles.

That poofteenth above actual size is a very useful one when turning. Say I'm turning to 25 mm - I would set my calipers for 26 mm and take bigger cuts till the calipers fit then I creep up to the right size using smaller cuts.

The cone thingy could also be useful other way - say you want to turn to 25 mm mm so you turn for a while and you drop the calipers set at 25 mm on the turned wood and it sort of sits on the wood but its hard to envisage whether you have 1 or 2 mm to go. Set the calipers to the size of the wood being turned and then drop the calipers on the cone and see how much there is to go.

Of course a digital vernier calipers are pretty handy in these situations.

Good idea. Will save some time as I always have to rummage in the shavings to find the ruler.
Regards
John

Originally Posted by BobL

That poofteenth above actual size is a very useful one when turning.

I wouldn't have thought that there were many big poofteenths among turners.

Originally Posted by BobL

The cone thingy could also be useful other way - say you want to turn to 25 mm mm so you turn for a while and you drop the calipers set at 25 mm on the turned wood and it sort of sits on the wood but its hard to envisage whether you have 1 or 2 mm to go. Set the calipers to the size of the wood being turned and then drop the calipers on the cone and see how much there is to go.

I can see how that may help. One thing that I haven't mastered yet,, that gets me nervious,, is sizing tenons to fit some hole. I like the fits to be just right, but I feel that its not going to be accurate enough with calipers.....either because the calipers flex a bit, or because I'm accually cutting at the wood a little with them so that I've really sized bigger overall...etc..

Can only relax when I can test the fit, but to do that I have to dock the end off. point of no return sort of thing.

Not sure I get you with the tenon size query AT.

How would this work?

Turn it down to a bit over size, then turn the tip down to your best guess and fit it into the hole. Twist the tenon to and fro a bit and remove. The mark left on it tells you what size it should be and then you can take a light cut on part of the remainder and retest. And repeat.

Make sense?