Trouble with successive opBoolean calls

daniel_cravens

I am making a feature to cut dovetails into a part. I want to subtract the dovetail bodes from the female side and then union the dovetail to the male side. The following code *almost* works.  I make two opBoolean calls -- one subtract and the other union.  Either one works by themselves (i.e. if I comment one or the other) but this code does not execute with both opBoolean calls. There is no error.  I'd appreciate any suggestions...

====================

annotation { "Feature Type Name" : "uiCutnJoin", "Feature Type Description" : "" }

export const uiCutnJoin = defineFeature(function(context is Context, id is Id, definition is map)

    precondition

    {

        annotation { "Name" : "Sketches", "Filter" : EntityType.FACE, "MaxNumberOfPicks" : 3 }

        definition.sketches is Query;

        

        annotation { "Name" : "Male Body", "Filter" : EntityType.BODY, "MaxNumberOfPicks" : 1 }

        definition.maleBody is Query;

        

        annotation { "Name" : "Female Body", "Filter" : EntityType.BODY, "MaxNumberOfPicks" : 1 }

        definition.femaleBody is Query;

        

        annotation { "Name" : "Terminal Face", "Filter" : EntityType.FACE, "MaxNumberOfPicks" : 1 }

        definition.terminalFace is Query;

             

    }

    {

        

        var sketchFace = qNthElement(definition.sketches, 0);

        var terminalFace = qNthElement(definition.terminalFace, 0);

      

        opExtrude(context, id + "extrudeDoveTails", {

                "entities" : definition.sketches,

                "endBound" : BoundingType.UP_TO_SURFACE,

                "endBoundEntity" : terminalFace,

                "direction" : evOwnerSketchPlane(context, {"entity" : sketchFace}).normal

        });

        

        var rails = qCreatedBy(id + "extrudeDoveTails", EntityType.BODY);   // these are the dovetail bodies

 

         opBoolean(context, id + "cutFemale", {                                               

                "tools" : rails,

                "targets" : definition.femaleBody,

                "operationType" : BooleanOperationType.SUBTRACTION

        });

          

// The following wont work if the prior opBoolean executes, but does work if I comment out the prior opBoolean

        opBoolean(context, id + "addMale", {

                "tools" : qUnion(rails, definition.maleBody),

                "operationType" : BooleanOperationType.UNION

        });

              

    });

NeilCooke

For the cut you need to include {"keepTools" : true} otherwise the tool body will be deleted.

There is also an existing box joint custom feature: https://cad.onshape.com/documents/57612867e4b018f59e4d52ce

daniel_cravens

Yes, thank you. That was the problem!

daniel_cravens

My feature is for a butt joint with an aim at splitting, printing, and then joining parts too large to 3d print.

daniel_cravens

My feature works as expected on some faces (as in the picture above), but opextrusion fails if I use it on other faces of the model. I'm at a loss. I'd really appreciate any advice as to how to troubleshoot this error. The notices and code are below.  I apologize for such a large post but I'm not sure what information folks need to offer advice.

https://cad.onshape.com/documents/4a05a3fe360ed36e462f3c76/w/88116110cd3e087d5b3fd67f/e/d239b905e8fcc80aa5a839f8

  Part Studio 1

		@opExtrude: EXTRUDE_FAILED
		575:12	onshape/std/geomOperations.fs (const opExtrude)
		201:9	Feature Studio 1 (const uiCutnJoin)
		56:17	onshape/std/feature.fs (defineFeature)
			Part Studio 1
			Part Studio 1

debug: Direction (-0, -0, -1) Result: Regeneration complete

==========

annotation { "Feature Type Name" : "uiCutnJoin", "Feature Type Description" : "" }

export const uiCutnJoin = defineFeature(function(context is Context, id is Id, definition is map)

    precondition

    {

        annotation { "Name" : "Sketches", "Filter" : EntityType.FACE, "MaxNumberOfPicks" : 3 }

        definition.sketches is Query;

        

        annotation { "Name" : "Male Body", "Filter" : EntityType.BODY, "MaxNumberOfPicks" : 1 }

        definition.maleBody is Query;

        

        annotation { "Name" : "Female Body", "Filter" : EntityType.BODY, "MaxNumberOfPicks" : 1 }

        definition.femaleBody is Query;

        

        annotation { "Name" : "Terminal Face", "Filter" : EntityType.FACE, "MaxNumberOfPicks" : 1 }

        definition.terminalFace is Query;

        

        annotation { "Name" : "Variance" }

        isLength(definition.variance, LENGTH_BOUNDS);

             

    }

    {

        

        var sketchFace = qNthElement(definition.sketches, 0);

        var terminalFace = qNthElement(definition.terminalFace, 0);

        

        var extrudeDirection = -1*evOwnerSketchPlane(context, {"entity" : sketchFace}).normal; // I expected this vector to point into the model all of the time

        debug(context,extrudeDirection ); // this seems wrong because I would have thought 

        

        opExtrude(context, id + "extrudeDoveTails", {

                "entities" : definition.sketches,

                "endBound" : BoundingType.UP_TO_SURFACE,    // I've also tried UP_TO_FACE and UP_TO_NEXT with same results

                "endBoundEntity" : terminalFace,     // I remove this when I use UP_TO_NEXT

                "direction" : extrudeDirection             // I've tried flipping the direction by multiplying by -1

        });      

        

    });

NeilCooke

Two problems - terminalFace needs to be bigger than the sketches you are extruding - your selection is only half the size so it "falls off the end", and the extrude direction is wrong.