Why use a fly cutter?
There are 3 big reasons fly cutters are used: 1 They produce a better surface finish than most Face Mills. 2 They’re inexpensive relative to Face Mills. 3 They’re ideal for smaller machines that don’t have the spindle power needed for Face Mills.
Is there a positive rake on a drill?
There’s no positive rake, but there is clearance from the angle and a big radius so the geometry is not bad. Note: The center drill is just a placeholder and is not being used as a cutter! This one is very close, but the face is vertical and should tilt back away from us to create positive rake.
Can a fly cutter fit in a toolchanger?
But here’s a trick–if your machine orients the spindle to the same position every toolchange, you may be able to fit a flycutter in a toolchanger that won’t allow a similar diameter shell (multi-insert) mill.
How to change the direction of a fly cut?
Change the direction of the cut by changing the raster angle.
What bit to use for fly cutting?
The router bit. Nearly any flat bottom bit can be used for fly cutting, but a large diameter bit will allow the work to go faster because it requires fewer passes. That being said, a 3/4" straight bit, left, will provide the same results as a larger diameter cutter.
What is fly cutting?
Fly cutting is the process of leveling the spoilboard to make it flat again. It can also refer to the work you would do to level a piece of stock like a large slab that still has sawmill marks in it. When using your CNC you will, in all likelihood, periodically cut all the way through your pieces. Minimize the frequency ...
Can you fly cut spoilboard?
When your spoilboard starts to look like the surface of the moon, or a small-scale version of that, it needs to be fly cut. You should also fly cut the spoilboard on a brand new CNC machine. This guarantees that the surface of the spoilboard is perfectly parallel to the travel of the spindle.
Fly cutting setup for flathead
I need to figure out a work holding setup to fly cut the deck of a set of flatheads for my '46 Indian Chief motorcycle. How is this typically done? I don't have any experience machining heads. I was planning on machining the heads with a Deckel FP-1. Any advice is appreciated- thank you in advance.
Holding an Indian head for milling
I prefer to cast stuff like this into a box with plaster of Paris...It's a lot more rigid than wax and can be removed reasonably easily if you pre-spray the part with a release agent. If you stick the head to a board flat side down (use wax or Plasticene), you can build a simple frame to box in the head, and then just pour the plaster around it until it's covered.
