Having chipout problems with amboyna burl

[keithz]

I've lost three blanks so far while turning a slim pen. I am using a very sharp, well honed skew to cut the wood and just as I am getting to the thinness I desire, the end of one of the tubes chips out. It is not glue failure, it is wood failure. I even tried saturating the wood with CA as I got thinner.

I am baffled as to what to do.

Any thoughts?

keithz

 

[cd18524]

Maybe switch to a scraper near the end.

Chris

 

[mrcook4570]

Save yourself from frustration by sending me all of your amboyna blanks []

Take lighter cuts. Perhaps even turn with a little more shape rather than bushing to bushing, to provide a litlle more 'meat' near the ends.

 

[wdcav1952]

Consider doing your final shaping with sandpaper.

 

[Dario]

Are you using the skew in slicing manner or scrapping?

If the later, try slicing. Also try applying thin CA at the ends after milling. If that still fails, I am with Stan [].

 

[keithz]

I'm slicing the wood with a paring cut, not scraping. I guess I'll try scraping on the next one. I'll also use more thin CA. A customer has ordered two pens from amboyna and I really want to complete the order.

Thanks

keith

 

[bob393]

CA at the end is my trick, saved me many times on spalted stuff!

 

[kent4Him]

Make sure you are not getting the blank too hot. Amboyna does not like heat and can cause cracks.

 

[BRobbins629]

You can usually fill the chip outs with sawdust and CA if they're small. I first fill the hole with sawdust, then use a toothpick or nail to drop a small about of medium CA on it and hit it with a little accelerator. If small, I do this on the lathc - if larger, I remove the blank first. After filling, sand to round. May take more than 1 fill, but very worth it to save Amboyna.

 

[Rifleman1776]

High speed, light touch. You use a skew, that's good, is it a large one? e.g. 1"

 

[DocRon]

Also use CA on the ends before milling and again before mounting on the lathe. Maybe as I get near to the completion of the turning, in the really bad cases.

 

[keithz]

Originally posted by Rifleman1776
<br />High speed, light touch. You use a skew, that's good, is it a large one? e.g. 1"

Using my 1/2" Kryo skew, taking light cuts. I hone the skew several times while turning wood; before starting the blank, during the turning, and before finishing cuts.

I think I will be using more CA during the turning process.

keith

 

[dbriski]

If your going to be using more thin CA, on the lathe, I reccomend making sure your bushings and mandrel are well waxed so the CA doesn't stick. My thin CA likes to get all over everything and the wax has really helped.