Thanks Ulsif! I just emailed you, but then I googled and found this:
http://www.bolterandchainsword.com/index.php?automodule=blog&blogid=29&
(combiplas conversion is about 2/3 down the page)
It's pretty good, actually. It uses
plas-pistols. While it's based on plastic combibolters, there's very little cutting done on the combibolter itself - I should be able to do a good job on the metal ones with a jeweller's saw and a file. I like that the 'bolter' barrel is moved and placed lower down next to the chainsaw/blade, that makes things much easier.
I may cut into the top of the combibolter a bit so as to be able to include the "coil" of the plaspistol too. That's going to involve some more precision than simply sawing off the barrels though...
If you were talking about a different tutorial, please let me know.
Thanks again,
-S