SDSSmith wrote:You can use either set of holes for 'standard' Ringmaster rings. One side yields thicker rings. The instruction manual guides you on setting the correct angle.
What Nick was doing was done using a scale mounted as the reference. He was not using the guide plate. He was also varying the angle depending upon the vessel's shape.
Yes . I understand about seeing him using a ruler taped on for checking distance. What I am concerened about is what distance he uses for making the 10" curved one shown in the Excel spreadsheet he provided.
Using 3/4" stock as shown on the spreadsheet, I believe it is important to know the right distance to move forward for each ring . .
Also , what is not shown in the video is if he trims each ring just cut for the angle of the next ring before cutting that ring out. Someone has told me that is a important step. I think in the video he is making a straight sided bowl where that step is not necessary because the angle and the forward travel is the same for every ring.
I have a PAG (Precision Angle Guide) where I can set the angle in thousands of an inch . As an example , in the plan, the first ring is 1.312 , second ring is 1.468, third ring is 1.688 and so on.
I can set those values with extreme accuracy with the PAG and a digital micrometer.
My problem is that I need to know how far the machine has to be set ahead for each ring because so far it has been trial and error (mostly error). The plan does not say which holes on either side of the guide plate should be used or if any other type of measurement should be used which is different from the pre-set holes on either side of the guide plate .
The video shows what I believe to be an easy straight sided bowl where he uses the same distance and angle for every ring.Those bowls are extremely easy to make with no challenge at all . Curved sided ones are a whole new ball game.
In the case of a curved sided bowl , changing the angle for every ring also changes the amount of travel required for each ring or you run into a very thin ring on one side that will not match up with the previous one when stacked.