joe greiner
27th May 2007, 01:46 PM
On another thread ( http://www.woodworkforums.ubeaut.com.au/showthread.php?t=49621 ), we have a discussion about burning lines. Tom (thostorey) asked about burning a line on the interior of a bowl. I suggested using the outside of the elbow of a bent dental pick, and added it might also work on the top of the rim, as well as at awkward surfaces of the exterior. All that was talking the talk; here is walking the walk. Completed a few hours ago (Saturday arvo here).
Sweet gum. 5" (130mm) diameter; 1.75" (45mm) high; 0.25" (6mm) wall. Sanded to 400. I did these without any precut grooves. The pick made its own grooves. 2400 rpm (fastest available). I found that just the outside of the elbow didn't have sufficient contact for good burning, and tilted the pick to provide about 8mm contact. I only did two rings on the interior because, frankly, I ran out of courage. Lower pucker factor on the exterior, but still a bit scary to deliberately jam the tool between the toolrest and the bowl.
I didn't form the bottom as much as usual because it was already almost a funnel. Just turned down the tenon (chuck jaw impressions still visible) and rounded the bottom corner. Likely finish will be Minwax Polycrylic, which I've been wanting to try, and probably my S&T at our club meeting on 5 June. (See it up close, Gil.)
Joe
Sweet gum. 5" (130mm) diameter; 1.75" (45mm) high; 0.25" (6mm) wall. Sanded to 400. I did these without any precut grooves. The pick made its own grooves. 2400 rpm (fastest available). I found that just the outside of the elbow didn't have sufficient contact for good burning, and tilted the pick to provide about 8mm contact. I only did two rings on the interior because, frankly, I ran out of courage. Lower pucker factor on the exterior, but still a bit scary to deliberately jam the tool between the toolrest and the bowl.
I didn't form the bottom as much as usual because it was already almost a funnel. Just turned down the tenon (chuck jaw impressions still visible) and rounded the bottom corner. Likely finish will be Minwax Polycrylic, which I've been wanting to try, and probably my S&T at our club meeting on 5 June. (See it up close, Gil.)
Joe