I need to create casting tool and I have small problem , when I try apply shrink 4.5% solidworks do this
Green part is finish size part
And i need expand tool as bellow .... using 4.5%
how to do that ?? Please help !!!!
What are you scaling about? Centroid, origin or a custom coordinate system?
Please have look on that ...
Can you please post your part?
And just so I understand, do you want the top or bottom face not to move?
I think if your origin or 0,0. on your parts was at the center of the arcs or in other words at the vertex of the angles, you will have better luck. Keep using the scale from the origin like you have it.
Soo i need create Casting Tool
Finsh Size part + 10 mm and 7.5 mm for machining +4.5% for shrinking
I can expand 10 mm and 7.5 in sketch but problem is when I need apply 4.5%
Please post your part.
ok Thank you for help
Krzysztof, do you need a volumetric scale or dimensional scale?
I believe there is a macro that would do that with ease. Kelvin posted it the other day in a different thread.
I try it ModelRescaler and its just scale , maybe I need use volumetric scale ?
You can also use the Move Face Command to add extra material on all sides.
I would use configurations to achieve what you need.
First config would be the finished part.
Second config would be the pre-machined size.
Third config would apply the 4.5% shrinkage allowance with the SW Scale tool.
The second config could be created by manually changing the dimensions with the This Configuration option selected.
You could also use other tools like Move Face or Shell (Outward) to do this.
I try use Move Face but you have to use mm and i need %.
I have to do that manually every time , im looking for magic tool in SW which can calculate for me +4.5% of mass.I need expand part 4.5% not scaled.
Please check attachment Final casting tool + Drawing
Kelvin gave your the right method to use. Use your sketch to make the part with the added material for machining. When you have the proper sized 3d final part, make another configuration that will show the size required for the mold. Scale the 3D part in that configuration only, using a factor of 1.045 in the Scale feature. That configuration can be used to generate the cavity for your mold.
Jerry, Kelvin, he is not looking for the result given by the SCALE command. Take a look at his pictures. If I am not wrong, I believe that he wants to add material to all sides starting from the neutral fibre (if I can call it that).
I'm looking at it from the point view of the part being of a full circle. If the part is a casting, the diametral shrinkage will occur linearly toward the centre. Think shrink-fit ... the hole would not get bigger when the casting cools.
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