[Tvenk]

Been lurking around for a while and me and a buddy decided it's finally time we tackled a proton pack. I've done a number of other cosplays over the years, but this is one that's been on my list for a while. Decided we wanted to mold our own and do fiberglass shells, but that there were enough resources out there we shouldn't start from total scratch.

Pack is going to be 3D printed in pieces using the MK4 files and then we'd clean up a few areas and tweak some stuff. This forum is an amazing resource. Been at it long enough now I can share a few pics of the progress.

[Tvenk]

3D printing all the parts took well over 100 hours on my small printer and a ton of cleanup work to do.

[Tvenk]

Sanding is my least favorite part of costume/prop making and it's SO much of the effort haha








Doing test "fits" as we go gives us motivation to keep working

[Tvenk]

First layer of filler primer gives us an idea of how much work we have left but also shows how far the pieces have already come.







Any back to the filler and sandpaper...

[Tvenk]

Progress continues







And just in case anyone is curious what the underside looks like

[Styrofoam_Guy]

Looks great. I know how much fun it is to bondo and sand (again and again)
Where did you get the 3D files?

[Tvenk]

Thanks - yeah so much bondo and sanding haha.
I got them here on the forum after reading through a few threads trying to put together an updated set of plans. I believe the thread was titled: NEW GBFANS PACK PLANS

[Tvenk]

The work continues, slow and steady progress - the last 20% takes 80% of the time...








Any now for another coat of primer - finally getting close here with finishing the buck.





And for some reason I got this weird crack and a bubble in a terribly inconvenient spot, so now that needs to be fixed...

[Demon Vice Commander]

Your master is looking good! I would recommend filling the cyclotron holes and power cell instead of molding it with them recessed; this will give you greater control over the thickness of said windows when it comes time to lay up the fiberglass and resin - otherwise you may end up with really thick windows.

[Tvenk]

Thanks! That's helpful insight, though if I'm being perfectly honest, I don't know if I have it in me to go back and fill them in at this stage and refinish those surfaces haha. I'll have to address it with how I lay up the fiberglass on the back to make sure I can sand it down without compromising the surfaces around it.

[Tvenk]

Been a while since my latest update - too many things happening, but progress continues:



Ready to start adding clay - put a little jig together to try and ensure consistent thickness








Had to redo a bunch of the keys and double check several of the walls to make sure I didn't have overhangs ahead of the fiberglass. It's amazing what you see after you walk away and come back.

[Tvenk]

Fiberglass time








All trimmed up, ready for the next side. This stuff is messy (been a while since I fiberglassed). Also polyester resin is cheap which is great, but man the fumes are overpowering. Each time I took the respirator off it was wild. I'm not great at this (still some air bubbles) but was good enough to get the job done.

[Tvenk]

The fiberglass jacket came off (with some effort) and I had more bubbles than I wanted (and created some additional overhang risk) so decided to fill those with clay. Also - since I used plastic between the clay and fiberglass, there were a number of spots where it bunched or creased that created larger impressions that would just be annoying after a silicone pour so I filled some of that stuff with clay too in order to make removal simpler later.

Oh yeah and drilled fill and air vent holes (more lessons learned on that later)












Then it was time to clean off the buck and bolt everything up properly.