Changing shape

I know that the wood changes shape slightly as we remove it and the remaining wood is subject to different forces but recently I have noticed that with certain woods it seems to happen very quickly. I work on the outside of a bowl and move round to the top, then I decide that I want a bit more off the bit I've cut ten seconds ago and blow me down it's already no longer round. That severely reduces my ability to get a smooth flowing cut as the gouge bounces on and off the wood

It seems to happen a lot with elm, also ash. Is there something wrong or have I only just noticed it?

Richard - Oxford UK

Reply to
ClaraNews
Loading thread data ...

Evenin" Richard:

You didn't mention - Are you turning it Green/wet or Dried?

Inquiring minds need to know.

The Other Bruce

Reply to
Bruce

Bruce

Thanks for taking this up.

Answer is Dried. I work occasionally with green wood, where I expect movement, but mostly using dried wood (air or kiln dried) from specialist suppliers of blanks.

I also work with material from local cabinet makers. They often have offcuts which are no use to them but which I can turn into attractive (I hope) bowls and platters - I usually give a finished turning as a Thank you. That material will also be dried and also suffers from the "move while I turn" syndrome.

Richard

Reply to
ClaraNews

You can help you cause somewhat by using a steady while doing the interior hollowing, but if you want non-moving, best learn to turn some material other than wood.

Part of the "bounce" could also be your gouge angle. If you're getting tearout, you should know that the wood squirms away from the higher friction. Best answer there is not to "ride" but "guide" the bevel of your gouge, using your toolrest for support, and keep the shavings modest.

Our North American elm is so twisted in its growth habit it's difficult to predict what it'll do sometimes.

Reply to
George

Obviously toward, before someone jumps.

Reply to
George

InspirePoint website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.