Uploaded August 2025 | Updated September 2026, 1 week ago
It is not a sine bar (although it is not pretending to be), maybe one could call it a cosine bar or a tangent bar. Either way it does the same thing, just quicker cheaper and a bit less (but still very) accurately. That being setting up angles.
Don't get me wrong, nothing beats a well made sine bar for setting precise angles, but sine bars, or more accurately the gauge block sets that go along with them are very expensive, and I could not justify buying them..... yet.
I am more of a draw a line with a protractor kind of guy, but when I saw a design for a quick set up sine/cosine bar I jumped at the opportunity to try and see if I could make it work. I am not expecting sine bar accuracy, but anything below 1/2 a degree and I will be happy.
#machining #diy
Timestamps
0:00 - Intro
0:54 - I Need A Design
3:00 - The Design, Tools and Materials
5:12 - The Base
8:31 - Moving Pin Assembly
13:38 - Swing Arm
18:38 - Washers and Pin
20:11 - Assembly and Test
It is not a sine bar (although it is not pretending to be), maybe one could call it a cosine bar or a tangent bar. Either way it does the same thing, just quicker cheaper and a bit less (but still very) accurately. That being setting up angles.
Don't get me wrong, nothing beats a well made sine bar for setting precise angles, but sine bars, or more accurately the gauge block sets that go along with them are very expensive, and I could not justify buying them..... yet.
I am more of a draw a line with a protractor kind of guy, but when I saw a design for a quick set up sine/cosine bar I jumped at the opportunity to try and see if I could make it work. I am not expecting sine bar accuracy, but anything below 1/2 a degree and I will be happy.
#machining #diy
Timestamps
0:00 - Intro
0:54 - I Need A Design
3:00 - The Design, Tools and Materials
5:12 - The Base
8:31 - Moving Pin Assembly
13:38 - Swing Arm
18:38 - Washers and Pin
20:11 - Assembly and Test
