First fillet does not work

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 From:  Michael (MJV)
3508.1 
Hi folks. I am trying out the demo of Moi and cannot get fillet to work on this object. I select the edge, run the command, select a distance, and nothing. Any ideas?
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 From:  Michael Gibson
3508.2 In reply to 3508.1 
Hi Michael, could you please post the 3DM model file that you are trying to fillet? It helps a lot to analyze the model directly instead of trying to figure out sizes and such only from a screenshot.

My guess though is that you may need to use a smaller radius value. It looks like the radius of 0.53 that you are trying to use there is fairly large in proportion to the model and there is probably not enough room to fit a fillet of that proportionally large size within the available space in the model.

Try smaller radius values like 0.1 or 0.05 for example.

- Michael
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 From:  Michael Gibson
3508.3 In reply to 3508.1 
Hi Michael, also I'm not entirely sure if you have a solid object there or only a surface that has holes in it?

In order to fillet an edge, it has to be a joined edge between 2 surfaces.

The left side of your surface there appears to be open instead of being a capped off solid.

- Michael
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 From:  Michael (MJV)
3508.4 In reply to 3508.3 
Great thanks Michael. That was it. It wasn't solid. All good now.

Michael
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 From:  Michael Gibson
3508.5 In reply to 3508.4 
Hi Michael, I'm glad that solved it.

It can be easier in some ways to work on solids, because then you can cut a solid object up with Boolean commands and the various pieces of the cutting objects will stick around in the result keeping it a solid.

So for example if you have that revolved type shape, before you cut a hole in it it can be nice to seal off the end of it to make it a solid - there is a Construct > Planar command that will seal off planar openings like that.

Here's an illustration where I have a solid cylinder base object, and then I use the Boolean Difference command to cut a hole in it with the rectangle curve - note that the result in this case leaves the side walls that were formed from the rectangle extending out without needing to fill in those areas as a separate step:





- Michael

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 From:  Michael Gibson
3508.6 In reply to 3508.4 
Here's another example - say you want to carve off the end of a cylinder.

To do that you might draw a curve in a side view that is positioned to intersect it visually, like this:



If your cylinder is an open surface, it might look like this:




You can use Boolean Difference to cut that cylinder surface up using the curve as the cutting object, which will cut it into pieces like this:



Then if you delete the end piece you'll see that you still have an open surface:




However, if you have a solid cylinder that has the ends capped off, it would look like this:







When it's a solid the booleans know how to combine the pieces together to keep the result a solid, which can help to avoid trying to manually build the side wall pieces.

- Michael

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