Fellow Servants of the Emperor!
You surely agree that the holy Bolter is the appropriate Tool to spread the word of the Emperor among the stars.
I recently visited a styrodur (hard foam, XPS) crafting workshop held in Hamburg by Gerard Boom aka GeBoom from Shifting Lands, which allowed me to fulfill a long standing dream: building my own bolter!
Gerard is a fantastic person and a great tutor especially for working with hard foam, of which he does not only know all the tricks but is also freely sharing them! I can honestly recommend attending his workshops. You will be able to work on a project of your choice and get Gerard's advice on it! Also, check out his online shop where he is selling great tools (which I could all try at the workshop for free) and even a book for building tabletop terrain with hard foam.
So I had two days to build a bolter. First I cut several parts with a hot wire cutter:
End of day 1: Everything glued together:
Day 2: Detailing:
But nothing that can not be fixed with some filler at home:
Thanks GeBoom!