將螺栓切成一定長度後，請使用固定式砂輪代替銼刀清理作業。使用研磨機，可以很容易地使螺栓的末端直角並應用所需的倒角。

請特別小心，尤其是當螺栓短於研磨機的工作台時。如果螺栓較短，則在研磨過程中使用一對虎鉗將螺栓固定住。請記住，打磨後螺栓的末端會很燙！

You have the basics down pat.

The key to getting the threads working properly is:

1. Squaring off the thread end of the bolt. Yes, the hacksaw blade will follow the threads slightly. If you have a bandsaw with a stock holding vise that can be squared to the blade, run a single nut on so the hexes will hold the bolt in place as straight to the blade as possible. Otherwise its finish work with an 10 to 12 inch mill file with proper handle and a vise. The larger file gives you control.

2. Adding the chamfer on the thread which you use either a file and vise or gentle grinder work to produce as evenly around the bolt circumference as possible. You want it as flat and minimal as possible to maintain the thread and to follow the thread angle which is 30 degrees (half of the 60 degree included thread angle).

3. The missing element is the thread cleanup. Threads are cut with a 60 degree angle. A standard 60 degree triangular file is perfect. You will need a rather small one that easily fits as close to the root of the thread as possible, use it to get rid of the burr that formed when you chamfered the end of the bolt off and cut a slight lead in which removes anything that departs from the proper thread angle. The thread should exit into the chamfer looking as much like a 60 degree cut thread as possible.

Improper thread cleanup is where you get the problems with starting nuts on the bolt. If it looks like half a thread coming off the end of the bolt, it will either be bent partially over, or easily deform in use so the nut cannot start properly or galls with the weak thread and jams. Either leads to cross-threading and misery.

Done more than my share during my early mechanic career working with old farm equipment where proper length bolts aren't always available. Once you get the image in your head of what a proper bolt looks like for thread lead-in, it goes rather quickly.

您正在對偶爾執行此操作的人執行最佳操作。可以使用帶有磨料刀片的電動剁鋸在螺栓上進行更方形的切割（確定-正交...），如Caleb所說，砂輪機將有助於清理。

如果您要這樣做，則不需要擰上螺母即可清理螺紋。但是...聽起來好像您在這裡沒有問題。每個藍色的月亮，您都必須割斷螺栓，並且花一些額外的時間才能擰緊螺母？聽起來還不錯。

I use four nuts to cut the bolt at the proper length. Two nuts on each side of the cut - one locks the other nut in place so your blade has a secure groove to cut the bolt. I also use flanged nuts on the inside facing each other to provide a better guide for the saw blade.

您可以嘗試在切割刀片的任一側上放一個螺母，以使切口平整，並防止刀片沿螺紋漂移。