LF1 - Foam Dart Blaster (NERF Compatible)
Description
The LF1 has a flat range of close to 50ft, and is a very solid addition to anyone's office arsenal.
Printed on a Fablicator using KISSlicer.
fablicator.com
Instructions
The piston and piston rod should ideally be printed in ABS due to high impact loading, and the catch should be printed in PLA to improve friction and wear. The other parts can be made from either material, though ABS generally works better with support material.
The blaster shells, piston rod, piston head, and catch should all be at 100% density. The trigger and barrel can be printed with sparse infill and 2-3 loops.
Total print time is around 12 hours.
Most of the printed pieces need some amount of support material. With good settings, it can be easily removed with a pointy pliers, razor blade (careful!) and some sand paper.
Non-printed Components:
Most of these parts come in multiples from mcmaster. One pack of each appears sufficient to make 6 blasters)
Qty, McMaster part number, description
(1) 9657K434
Primary Spring 3" long, .660 OD, .062" wire
(9657K428 or 9657K432 can likely be substituted for a less powerful and more child friendly blaster, though this is currently untested)
(1) 9657K51
Catch Spring 1.375 Long, .187 OD, .02" wire
(1) 9657K51
Trigger Spring (same as catch, cut to .75in long)
(8) 90380A110
1/2in long #4-20 plastic screws
(1) 9452K26
#114 Buna-N O-ring
(1) 1378K31
PTFE Grease (or similar)
(1) 48925K92
3/4" Sch 40 PVC 4in long
Assemble as per the pictures, and try not to let the springs fly across the room during assembly. The o-ring and piston will need to be lubricated.
Do NOT fire the blaster without the barrel fully installed. Without it, the piston rod can impact the rear of the blaster, causing mayhem.
Foam darts will need to be acquired. Nearly every toy store has them, and usually under the brand name NERF. Velcro or suction cup darts are highly recommended.
SAFETY NOTE: Do not fire darts at people's faces. This blaster can be substantially more powerful than the store bought NERF blasters.
SECOND SAFETY NOTE: The LF1 has no mechanism preventing non-foam items from being propelled from the barrel at high speed. Therefore, it's not a good idea to give this to a 5 year old.
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Will this be the Thing that forces me to upgrade from my TOM and get a Replicator? Or build a Reprap with a bigger platform? Want!
Great design, I'm building one right now and can't wait to finish it.
BTW does anyone have any videos of this blaster shooting?
Awesome model. Here's an online 3D view for anyone without SolidWorks that wants to view the assembly...
(click for 3D View)
Hi Landru -Awesome design, Thank you! I printed on my Replicator and all worked perfect! Except regarding the 4" PVC pipe - I had to use 3/4" PVC Sched 40. The Inside Diameter measures approximately .814" or 20.69mm - this fits the Piston and and O-Ring assembly. Did I miss something or is the Mcmaster part possibly listed incorrectly? The mcmaster part comes up as 1 1/4" Pipe Size - 5 ft. Length with an Inside Diameter of 1.360" 370psi 48925K94 ?
I just want to make sure that others get the right PVC piece.
Having the trigger directly manipulate the sear like that is very clever.
How does KISSlicer compare to other slicers (Skeinforge, Slic3r)? Are you using the pro version?
It is better in almost every single way. I am using the PRO version (which lets you put different parts on a tray and use multiple extruders) though the free version is plenty capable for most users.
It's also being improved on a daily basis, and the GUI will be overhauled soon to make it even simpler to get started.
License
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Hi! I'm new to 3D printing, and CAD, but I want to make things like your Nerf gun. What program did you use to create the blaster?
Solidworks