The purpose of measuring taper angle is to obtain taper angle
The taper angle is the angle where a thread is tapered as it is created. The formula to find it is to subtract the small diameter from the large diameter and multiply by 28, then divide by the length of the taper.
Ovality and Taper Guages are used
Metric Taper Call Out - Means 1 mm taper every 5 mm of length.
Let's start at the beginning of the taper, where the opening is zero, and go out a foot until it opens to 3/4 inch. We have a long skinny triangle. The line down the middle is 1 ft long, the line that closes off the open end is 1-1/2 inches. The line down the middle divides the long skinny triangle into 2 back-to-back right triangles. Each one has a 12-inch leg and a 3/4-inch leg. The angle back at the pointy starting end of each triangle is half of the angle we're looking for. That [half]-angle is tan-1(.75/12) = tan-1(0.0625) = 3.576 degrees (rounded) The whole angle is 7.153 degrees (rounded)
They are solid shapes that taper to a point.
The taper angle is the angle where a thread is tapered as it is created. The formula to find it is to subtract the small diameter from the large diameter and multiply by 28, then divide by the length of the taper.
This is the formula for calculating a taper: Large diameter of the taper minus the small Diameter of the taper divided by the length of of the taper will give you the taper per inch. You will also need to know the included angle of the taper if you ar cutting this taper. This formula would be Tangent of the included angle divide by 2.
A Morse taper angle chart provides information on the taper angle measurements for different sizes of Morse tapers used in machine tools and equipment. It helps users identify the correct taper angle for specific tools and machinery to ensure proper fitting and alignment.
Ovality and Taper Guages are used
To measure bore taper
JIS and ISO square taper bottom brackets differ in their spindle length and taper angle. JIS bottom brackets have a shorter spindle length and a 2-degree taper angle, while ISO bottom brackets have a longer spindle length and a 1.5-degree taper angle. These differences affect compatibility with cranksets and require matching components for proper installation.
Square taper and JIS square taper bottom brackets differ in their dimensions and compatibility with cranksets. Square taper bottom brackets have a 2-degree taper angle, while JIS (Japanese Industrial Standard) square taper bottom brackets have a 1.5-degree taper angle. This difference affects the compatibility of cranksets with the bottom bracket spindle. It is important to match the type of bottom bracket with the corresponding crankset to ensure proper fit and performance.
A Morse Taper 3 tool holder typically has dimensions of 0.938 inches at the small end and 1.240 inches at the large end, with a taper angle of 5.19 degrees.
Seat the bolts using the 4 lb. hammer and taper bolt gauge
You should use a taper. You can probably find these at a piercing studio. It is important to first stretch it to a 16 gauge, and then to a 14 gauge about a month later to prevent tearing.
3/8
I would just go back to the shop you had it pierced at and have them run a taper through it. It's usually free and it's much easier than trying to mess with that kind of stuff yourself. But definitely use a taper. You don't want to just stuff the bigger one through...