Thanks Mike for the explanation. Today I put a piece of ash in the chuck --same dia. template in the same place as the forsythia and it came out a smaller size????, maybe the wood pulls the cutter towards it. The cutter is on the side nearest the leadscrew and the rotation of the spindle is clockwise looking from the headstock. I can make the spindle turn the other way , which way would you recommend, using a up cutting two flute spiral cutter and top router speed . Cheers Richard
On Wednesday, September 28, 2016 at 5:40:27 PM UTC+1, LILtwisted wrote: > > One thing I do when figuring out the path is to draw the ball on a piece > of paper, then draw the follower then draw the bit diameter centered on the > follower. If there is a smaller bit than your follower, the follower's > center will be farther away from the radius path need to accomplish the > finish ball. You will need to make a smaller template to be left with the > correct diameter. > > Lets say a 2" ball, a 1/2" bit and a 3/4" follower. the difference of the > bit and follower are 1/4" or 1/8" radius. The radius of the ball is 1" but > to correct we need to make it 7/8" radius in order to accommodate the > larger radius. > > the reverse is true if the follower was only 1/4" in this case you would > have to add 1/8" to the template to get the cutting side of the blade to > swing on a 1" radius. > > Bottom line here is to draw it out and prove your path with a compass. > > Mike OK > > On 9/28/2016 11:10 AM, Richard Ellis wrote: > > > > On Friday, September 23, 2016 at 6:02:35 PM UTC+1, Richard Ellis wrote: >> >> Hi All >> I am at a loss to understand why, when I try to turn balls from some pine >> to go with some kids skittles I have made, they come out looking like rugby >> balls instead of spherical shape. >> The wood is 1 1/2 dia. and is held in a chuck,--- router cutter is 1/2 >> inch dia. the stylus on the end of the router carriage is 1/8 inch dia >> I use a metal washer /plate of the same dia. as the wood as a pattern . >> The ball as I have said before comes off oval in shape it parts of very >> easily, I do the end of the wood first then travel back to the washer to do >> the other side of the ball, it just drops off into the sawdust, which was >> a surprise >> Do I need a larger plate washer or what do you recommend I do is there >> a magic formula for the diameters of the cutter plate and stylus ??????? >> Richard >> > -- > You received this message because you are subscribed to the Google Groups > "Legacy Ornamental Mills" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to legacy-ornamental-mills+unsubscr...@googlegroups.com > <javascript:>. > To post to this group, send email to legacy-orna...@googlegroups.com > <javascript:>. > Visit this group at > https://groups.google.com/group/legacy-ornamental-mills. > For more options, visit https://groups.google.com/d/optout. > > > -- You received this message because you are subscribed to the Google Groups "Legacy Ornamental Mills" group. To unsubscribe from this group and stop receiving emails from it, send an email to legacy-ornamental-mills+unsubscr...@googlegroups.com. To post to this group, send email to legacy-ornamental-mills@googlegroups.com. Visit this group at https://groups.google.com/group/legacy-ornamental-mills. For more options, visit https://groups.google.com/d/optout.
