Length: 36 inches
Plunger load: 18-32lb
Spring load maximum: 38lb
Optimal Barrel Length: 12 inches
Plunger rod has three notches affording different load rates which gives the user different range options.
28lb Pull: 140 feet
22lb Pull: 110 feet
16lb Pull: 80 feet
Individual results will be dependent upon too many factors to list so take these only at face value.
Tools REQUIRED for following this guide
+ PowerDrill or Drillpress
+ Mitre Box & Mitre Saw or a power tool useful for cutting plastic rod or tube (such as a table saw, circular saw, or band saw)
+ #6-32 Tapping Bit
+ Hobby Knife (to clean the edges of the sheets once cut)
No other tools expressly needed. All tools listed are not easily substitutable and I don't recommend attempting to make this gun with anything other than a scrollsaw due to the size of the parts you will be making.
Note: You will also need some full sheet label paper, electrical tape, and some spray silicone lubricant.
All items available through Mcmaster Carr
Simply search for the part #s listed. Total cost of supplies listed is around $80 plus shipping. You will have enough excess of most materials to make atleast 2 or 3 more guns.
Be warned. This guide has 37 steps. Not because the project is extremely complicated, but because I'm going to go into a good deal of detail on each step.