Note that I tried to fillet the inside corner and ended up with a hole there. What went wrong?
thanks, rex
Hi rex - impossible to say without the file but just at a guess, it may pay to MergeAllCoplanarFaces (`MergeAllFacesa’ if your Rhino version < 7) before the fillet.
-Pascal
Pascal, here’s the file.
I am using Rhino 7 on Windows 10.
thanks,
rex
TruckLowerCross.3dm (828.3 KB)
TruckLowerCross_PG.3dm (631.6 KB)
Hi rex - see if this makes any sense with what you need - all the coplanar faces are merged before the fillet. You can make a bigger fillets if you make that and then pop the hole through.
-Pascal
Pascal, your result is what I’m looking for, but I’m not able to reproduce it.
I start with the part as a single closed polysurface.
I then execute MergeAllCoplanarFaces. Then I go to Solid/Filet Edge/Filet Edge and select the internal edge between the vertical and horizontal surface.
I still get the same result I was getting which has an opening where the filet should be.
Thanks,
rex
Hi rex - does your part look like my pre-fillet part, in how the faces are arranged?
-Pascal
Oh, I just understood what you were saying. The filet I’m trying to make interferes with the hole.
OK, I’ll work with that.
Thanks,
rex
Pascal, I did get it to work after I noticed that you reduced the filet size to miss the hole.
Thanks much!
rex
OK, I got it to work with a .25 radius after plugging the holes.
Odd though that one end required me to mergecoplanarfaces, while the other one didn’t’.
Thanks,
rex
The “take away” here is you can not use a fillet radius that spans wider than the surfaces it is following.
You had a couple coplanar faces. Merging them made a single wider surface.
The hole was the same problem. The fillet ball was rolling along the crease the ran into the hole. Make a smaller hole, smaller fillet radius, or cut the hole after making the fillet surfaces.
If I have two 1/4" wide surfaces that meet at 90º, my fillet radius must be smaller than 1/4".
Yep, thanks John. I learned something today; always a good thing!