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Some of the edges on my project have extra deep corners cut out of them, even though this doesn’t exist in the Easel render. In the attached image, the problem is in the top right of the center rectangle. These should just be simple 90 degree angles.
Anyone else have this problem?
This is using a 1/8" downcut bit. Sometimes it’s less pronounced than this image, but it’s happening all over the place.
WorkinWoods: The belts feels fine. I haven’t tried anything else besides easel but may have to look into that.
JustinBusby: What do you mean “losing steps”?
And, is the “pocket” the bottom/floor of the carve? It’s not entirely flat but the 1/8" downcut bit (from inventables) isn’t flat either, there’s a slight angle to it which I thought would lead to the grooves at the bottom.
I included the entire carve if that helps diagnose anything.
Yes the bottom of the carve and it should be flat unless your using a ball end or some other end. Most bits are flat bits.
Grooves indicate mechanical issues most of the time.
And losing steps means that when you should move 3”, it tries but due to a mechanical problem, the motor only goes 2.9” or whatever. This could cause what you’re seeing with the corners.
If the router return to the exact same spot as prior to the carve it has not lost any steps. Your images do not show sign of lost steps to me.
Try a quick test carve, carving a “l” as in Google like you did in the image above.
Do one deep and another “l” shallow,
For instance one 3/4" deep and the other 1/8" deep. Compare the two entry/exit area of each “l”
Please post a pic
Thanks Haldor. The pronounced corners are very apparent. It’s always worst in the top-right corner, but the bottom left is problematic too. Here’s what I’ve got.
It is difficult see see exactly but the deeper cuts do show sign of being “more off” at the entry/exit point.
=> Z may be slightly tilted
The long stick-out of the spindle is also a factor I am sure, seen in the wavy lengthwise carve/edge.
How much do the tip of the end mill deflect if you add a 2lbs force to it?
Just wanted to say thank you for the replies and suggestions. Here’s what we discovered.
Our unit is a Gen 1 device and had a lot of wear and tear
The top right wheel on the Z axis motor assembly was missing a nut on the back(!) and the wheel was loose. The nut just fell off at some point. New hardware was installed
All the belts were tight, but the left belt motor pinion screw was loose and didn’t grip the belt well. There was a lot of play in it
We got a new Inventables bit to replace the old one, which probably helped too
It’s not necessarily perfect, but it’s working much better now! Getting there.