Step 1: Materials
Now for the fun stuff- for the blasters you'll need some MDF wood, sheet plastic or Sintra (PVC sheet sold by plastic suppliers and sign shops- cost about $35 for a 4x8 ft. sheet 1/8" thick), some wood screws, Bondo, epoxy, PVC cement and a few lengths of PVC pipe.
Step 2: Pulsar Blaster
The slide handle is made from a cut section of PVC pipe with ribs glued on. It has a piece of MDF glued inside it to hold the bearings for the slide. The slide itself is a surplus computer rack part I found at an electronics surplus store- a drawer slide might work as well (or just screw on the handle to the bottom of the blaster if you don't want it to move.)
Step 3: Pulsar Blaster step 2
The box section on the bottom of the blaster is made up from some Sintra sheet and is screwed onto the MDF section that holds the slide. The "shells" are made from wood dowels and have rubber furniture bumpers screwed into them.
The top section of the blaster is made by gluing a vertical section of PVC pipe and capping it and making the long flat part that curves and extends to the front of the blaster. The back part of this (the part that is green in the photos) is made by gluing some PVC rings onto a clear acrylic tube. I then inserted an old mountain bike fork bumper (the geen part) and made the cap for the rear out of scrap wood.
Step 4: Pulsar Blaster step 3
Step 5: Tri Barrel Blaster
Step 6: Tri Barrel Blaster- step 2
The shells are made from wood dowels with furniture bumpers screwed on. Some more Sintra sheet is then wrapped around the dowels and screwed on. To make it easier to bend the Sintra soak it in boiling water for a few minutes and once it's bent to shape dunk it in cold water to freeze it.
Step 7: Tri Barrel Blaster- step 3
Step 8: Tri Barrel Blaster- finishing up
The front of the barrels is finished by cutting a piece of Sintra sheet and gluing it onto the front of the barrels.
Now give both blasters a coat of primer and then a coat of silver paint!