If you don't have one, then a standard miter box and saw will do.
From the dailyherald.com
Use an inexpensive miter box or an electric miter saw to make precise 45-degree cuts on the frame ends.
From the dailyherald.com
An inexpensive miter box and saw should be adequate.
From the chron.com
Among the items taken were a 6-foot drill press, a tabletop drill press, grinders, band saw and miter box saw.
From the charlotteobserver.com
Place the pole in a miter box, and secure with pegs.
From the ocregister.com
I won't bore you with all the snags in the assembly, except to say that I had to make close to 200 pipe cuts using a miter box and a hacksaw.
From the washingtonpost.com
If you don't have a miter saw, you can purchase a hand saw with a miter box for a reasonable price, as opposed to renting a powered one.
From the stltoday.com
However, you can purchase a non-powered miter box and saw for around $15, but, if you have to make a lot of cuts, you'll wish you had rented the powered saw.
From the stltoday.com
A detail saw has a large, flat blade to fit into slots in the miter box for crisp cuts at a perfect 45-degree angle or for cutting a piece already in place.