Semiproduct with machining allowance

Hello,

l really need some inspiration from our clever PTC community. l will describe my problem as simply as possible. See attached files, that l used to describe my problem.

1) Target:

Parameter ROZMER shows a semiproduct size that should be order from a shop and should be delivered to engineering shop.

A) ROZMER must include a machining allowance.

B) ROZMER must change if the part has been changed.

2) Present situation:

See attached files please. Note: Some relations are on feater level in 1st model tree feater. It works perfect until l need add some machining allowance.

If a part needs a machining allowance, than l have to delete/deactive a ROZMER relation and change ROZMER manually. It´s a big source of failures, because future part modification are not propagate to ROZMER. In result l will order a smaller/bigger semiproduct. ---> this is bad system solution.

3) Description:

Parameter ROZMER (eng translate = semiproduct) includes information about material size.

How l use parameter ROZMER? --- ROZMER is shown in BOM tables ---> table exported to TXT file ---> TXT file imported to excel ---> excel table exported as PDF ---> PDF send to shop as an order list.

4) Ordinary parts from our company:

- solid part - needs an X,Y,Z (weidht, height, thick) machining allowance

- sheetmetal parts - needs an X,Y (thick is everytime same) machining allowance

- beams - needs a lenght machining allowance

Most of semiproduct comes form CNC laser/water cut. From this reason l need a DXF/DWG file. This file HAS TO include a shape with machining allowance.

5) My ideas:

A) Put a machining allowance into relation ---> PROBLEM: Parameter ROZMER is correct, but DXF file is bad.

6) My problem questions:

- How to include machining allowance? This allowance should be reflected in drawing space (DXF/DWG files for cnc cut)

7) Generall questions:

- What is your machining allowance system / strategy?

- How do you export DXF/WWG files with machining allowance?