I didn't have my blade stabilizers on...
What are these?
I didn't have my blade stabilizers on...
What are these?
I finally had time to tune up my table saw after the big move. So I started a segmented project just to see how it works. I cut a 24 segment ring using the seg easy. This time for interest sa
ke I numbered the rings so I could keep them in order and get the same side up. I did not put my Forest blade on but this was a good sharp blade. Interesting. When I put the ring together it seemed like it fit perfectly. then I flipped it over. There were 3 or 4 joints that had an .008" gap. I
I finally had time to tune up my table saw after the big move. So I started a segmented project just to see how it works. I cut a 24 segment ring using the seg easy. This time for interest sake I numbered the rings so I could keep them in order and get the same side up. I did not put my Forest blade on but this was a good sharp blade. Interesting. When I put the ring together it seemed like it fit perfectly. then I flipped it over. There were 3 or 4 joints that had an .008" gap. I used a feeler gauge to find out. Very slight and only on part of the segment. I talked to my friend Rod Smith who does wonderful segmented vessels and we have looked at issues like this before. I think I was feeding the wood at a different rate and possibly flexing the blade. I didn't have my blade stabilizers on which I use when I cut segments with my Forest blade. Any way I thought you would find this interesting.
I have always brought the segments into alignment by tapping on the outside and I tend to use more glue which seams to allow the joints to slide easier.Yes that's a problem I deal.with. normally I tap.on the inside and drive all.the segments out to match. The hole was too small in this one. I also didn't use as much glue and the glue had grabbed on many of the segments.
Hi Don, I’ll bet I can answer any questions you have about the Wedgie sled.I have been working on segmented pieces for a little over 6 months now, and I have purchased two pretty darn nice jigs to produce segments with but I am still having trouble getting a ring that I can glue together as cut--i typically end up gluing up two half rings and having to run them against the disc sander to make a ring without gaps in it. The first jig I got was the Accu-Slice and Accu Wedge for my bandsaw: http://www.accu-slice.com/ --John Manura-the maker has been fantastic at trying to help me--he actually cut several segmented rings on his Laguna Bandsaw, and he has a Rikion at his office shop, and since I have a Rikon 326 he actually took my system and mounted it on his Rikon and cut a ring that fit fine--he is not a fan of the Rikon, and talked me through a lot of adjustments I should make on my Rikon-which I did, and despite all of this when I cut the segments for a ring on my Accu-Wedge, it will not piece together without unacceptable gaps.
The second jig I went with is the 'Wedgie Sled', I first built one myself, and when I couldn't make good segment rings with the segments made with it, I purchased a Wedgie Sled from Pete Marken: https://www.petemarkenwoodturning.com/ I have checked my table saw and am running a Forrest Blade and still only get about 1 of 4 segment groups that make a ring without unacceptable gaps.
I am fairly meticulous, although a pig for neatness--and I am picky about the accuracy of my tools--so I would like any insight/advice/thoughts on what I might be more meticulous about or check in my process--I am liking what I have been able to make so far for segmented pieces but I hate having to 'massage' my segments to get whole rings without gaps. And oh yeah one other thing I will mention, I made several rings that required larger pieces for the segments and cut the segments on my Bosch Miter Saw-and they went together fine--I really don't know if the larger pieces makes things easier to fit or if the Miter Saw just eliminates something I am messing up on the other methods--BTW a typical segment is 1.5" or under for the rings I am building.
Thanks for any input/advice
Hi John,
It appears that in the area where you have gaps, the segments might not be lined up against the clamp, this could throw off the included angle of the ring. When I look at the inside diameter formed by the segments, it appears to be a jagged edge in the problem area. Don't know what could have caused this, perhaps the screw portion of the band clamp in the area or the glue had set up on some of the segments prior to clamping.
Dont know about the others but I dont have any problems with 8nor even 12 segments. Its 16 and 24 where i have problems.
If your triangles are accurate, your segments would be accurate.Jerry I made my angles using a Machinist Sine bar and then checked them afterwords. I think they are accurate but I'm definitely not a master machinist. But I will try to compare them to my friends angles. His are made on a computer controlled cutter.