Fillets on internal corners

graham_lock

Hi,

I have bodies which look like this:

I'm trying to workout how to find the internal corner edges so I can apply fillets?

I'm using qSmallest(qOwnedByBody(body, EntityType.EDGE)) (is there a better way?) which returns all 8 corner edges but how should I filter the inner ones?

Any help appreciated.

Thank you.

S1mon

You could look at the code for selection fillet, or just use the custom feature.

https://forum.onshape.com/discussion/13958/new-custom-feature-selection-fillet

lana

You can use evEdgeConvexity for the edges, You are interested in concave edges.

lana

@graham_lock

Yes - that looks correct.

S1mon

You could look at the code for selection fillet, or just use the custom feature.

https://forum.onshape.com/discussion/13958/new-custom-feature-selection-fillet

lana

You can use evEdgeConvexity for the edges, You are interested in concave edges.

graham_lock

Thank you for your reply.

I now have the following:

for (var edge in evaluateQuery(context, qSmallest(qOwnedByBody(outerSplitBody, EntityType.EDGE))))
{
if (evEdgeConvexity(context, {
"edge" : edge}) == EdgeConvexityType.CONCAVE)
{
debug(context, edge);
println("Found internal edge");
}
}

This does indeed find the internal edges - is this your intended approach?

graham_lock

Thanks @S1mon i’ll take a look at that.

lana

@graham_lock

Yes - that looks correct.