wedge ruler
#5
Super Member
Join Date: May 2011
Location: Pacific NW
Posts: 9,563
If you have a 10° ruler, then you'd need 36 wedges.
#8
Super Member
Join Date: Jul 2012
Location: Morris Plains, NJ
Posts: 1,803
Agree. Also, be careful of the width of the narrower side as that determines the opening for the center circle of the DP. I.e. If it comes almost to a point, it will be a smaller opening.
#10
Super Member
Join Date: Jul 2012
Location: Morris Plains, NJ
Posts: 1,803
Also, forgot to add that the traditional DP has 20 blades. 360 degrees divided by 20 = 18 degree. Some ruler jackets have the degree on them, some don't. That's my pet peeve. They should all have degrees and how many blades to make a circle and also how big the center circle will be!!
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