Hi Jonzker, it looks like one of the previous fillets didn't do a completely proper job and left a little gap in the object.

One clue for this is with version 2.0 the "object type" readout in the upper-right corner of the window says that this object is a "Joined srf" rather than a "Solid" :



The problem seems to be along this edge here:



This object may need a bit of surgery in that area to repair it first before that fillet you want to do will work, I'll take a look to see if I can tune up this object.

- Michael

Hi Jonzker - the regular filleter really does not like this shape very much, it seems to have a lot of problems with the area that is sloped out the most.

I was able to sort of deconstruct and re-construct the object by using surface/surface filleting and some manual surface trimming in that area that the regular edge-based filleter did not handle properly, I have attached the result here as question2.3dm .

This version should now be able to fillet that planar side, you can select the face there:



And then a fillet smaller than radius 1 (like 0.8 or something for example) should work on this version:




Looks like definitely something that needs to be tuned up in the filleter but I hope this tuned up version here will help you complete your current task at hand.

- Michael

wow thanks michael,, ye that edge you pointed might be the trouble, i think my previous fillet created that gap and for some reason it didnt fillet the edge properly, thanks a bunch sir