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Much like Elvis, the OP seems to have left the building. In case there is a dramatic return, here is a LISP that should work, though unclear what "code" they want or or if this is for an actual plug-in. Solved: Fillet multiple polyline all at once by lisp - Autodesk Community I didn't look at Kent Cooper's version to prompt for a radius, but used the original and added something simple to it. I am sure Kent Cooper's is better. (defun C:FMP_R (/ plss n rad) (setq rad (getdist "\nEnter fillet radius: ")) (if (and rad (> rad 0.0)) (progn (command "_.fillet" "_radius" rad) (if (setq plss (ssget "_:L" '((0 . "LWPOLYLINE")))) (repeat (setq n (sslength plss)) (command "_.fillet" "_polyline" (ssname plss (setq n (1- n)))) ) ) ) ) (princ) )

@amook147 Try this With your exemple seem to work's... mdf_gear.lsp