Hi all, I wasn’t sure how to categorize this or even what is going wrong, but I’m having some trouble with a bit that I am using. The cut goes just fine except with this bit, so I think I’ve at least narrowed it down to that. My current project (routing out letters from ~2" of wood) starts with a fairly deep rough cut - I’m using a 1/2" straight bit going to a depth of 1.4" for the rough pass (the cut length on the bit is 1.25") with the following parameters (currently using inches for measurement - yes I want to switch to mm, but that’s beyond me right this second!):
Depth per Pass: 0.080
Feed Rate: 75.0
When I first wanted to write this, I wanted to see if there was a way to speed up the cut. This project (routing out letters), is taking about 2 hours per, and I’m pretty sure that I can adjust for shorter times, especially on the other bit that I use, but now I’m wondering what I’m doing wrong. The second bit that I’m using, which handles more detail, cleanup, etc, is the Amana 3" compression bit (Model 46016-K), and that seems to be fine, I’m using the following parameters:
Depth per pass: 0.040
Feed rate: 60
Whenever a problem happens, it seems to occur with just the 1/2" straight bit (I’m using a Freud). Here is a compilation of the issues:
- The router stopped moving. It was still spinning, but it wasn’t moving on the axis at all, just spinning in the same spot. I had to turn the whole thing off and restart. When I restarted, it seemed to zero properly, (I have the Pro, so I’m using the built-in bitsetter and the bitzero), but then went way too deep on the cut, didn’t retract far enough, and ripped its way through the wood. That was sad. I’ve actually had this happen a few times, where it seems to zero properly, but then everything goes wonky and it cuts way too deep.
- The cut was working fine until it was about 1.3" deep and then all of a sudden, it went off kilter about 3/8" and then tried to keep routing into the side of the wood. It was as if someone had jerked the router over and then let it keep going, but I hadn’t touched it. The only thing I noticed was that the sweepy boot had some buildup in the brush part, but I have no idea if that could cause the machine to essentially move to the side.
Anyway, this has been really frustrating, because the cuts take forever (2 hours on average), and I’m using birch and maple, so I really want to figure out what is happening. I’m hoping you all can help. Again, the problem seems to be with the straight bit, but I also know that I could shave off some time if I could tweak the numbers on the compression bit.
- What’s wrong with my straight bit, it keeps having random problems?
- Can the compression bit feeds/speeds be tweaked a little to decrease my cut times?