this program is completely free to download so you don't have to worry about spending money on it.
there are two different forms of the program pepakura...
pepakura designer and pepakura viewer. The difference is that pepakura viewer is used to view files that you've downloaded from other websites, and designer lets you design you're own 3d models. You will only need pepakura viewer for this project.
Step 1: Materials
spray paint(colors of your choice)
old magazine or cutting board
Step 2: Printing the piece
Once downloaded open the file in pepakura viewer. when opened there will be 2 windows showing the 3d model and the unfolded pieces of the model. now you have to print the pieces of the model by pressing print under "file" at the top of the window.
Step 3: Cutting out the pieces
*be warned there is a lot of cutting to be done*
use an old magazine or cutting board while cutting to prevent damage to anything you are cutting you're project on. you may want to use a bin or small container to keep your pieces in
Step 4: Gluing the pieces together
Step 5: Fiber-glass resin
using a brush and a small container to hold the resin, begin applying the resin to the helmet, make sure to only apply a thin layer of resin to the helmet. the helmet should have a glossy yellowish color to it after applying the resin.
*Important* if you do not have the bondo only apply the resin to the inside of your helmet. Also wear a pair of gloves and a breathing mask during this step because health problems may occur otherwise.
Step 6: Apply Bondo
** try to make it as smooth as you can because it will become difficult to sand down, also try not to aplply it to small spases as it will be difficult to sand down. i myself only applied it to the softer parts of the helmet because it was becoming difficult to mold onto the helmet
*Important* make sure you wear a pair of gloves and a breathing mask during this step because health problems may occur otherwise.
Step 7: Sanding
i used a sanding block for the larger parts as it made it easier to remove the bondo.
Step 8: Painting
after your done painting spray the rest of the helmet the other color that you have chosen (pics 5-7) and then apply a second coat to that color.