Hello
I have used the split tool to cut a curve from a 6mm thick block. I now want to offset a line and cut away the outer area so that the resulting block is smaller all the way around. Please see the attached image.
I create the offset line but then the push tool is unable to push through the outer area to cut it away.
Revealing hidden geometry shows some additional lines which are not part of my modelling workflow and must be the thing that is stopping the push tool from working.
To create the solid that cut away/split off the curve, I created a shape with parts of circles and then used the follow me tool around a path.
Any thoughts would be much appreciated.
Many thanks in advance.!

Thanks Rich.
I am creating an archway and the flat box is one of those in the attached image once I have split them from the arch. I need to reduce their size so that they act as inset mortar between the blocks of stone that make up the arch.

Thanks Rich.
I tried something similar and got it to work.
It still leaves the question as to why 'split' left pieces that could not be reduced in size with push/pull.
I imagine it is some setting along the way but it is mysterious.