PUMP-2000: Customizable Blaster w/ Shell-Ejection by BrewBoy

BrewBoy

Props & Cosplays>Cosplay Weapons

IP Report

Print Profile(2)

All

P1P

P1S

X1 Carbon

X1E

H2D

A1 mini

All Parts & Attachments - 0.16mm layer, 3 walls, 15% infill

Designer

44.5 h

13 plates

4.7(10)

A1 MINI - BOLT ACTION ONLY

Designer

20.5 h

5 plates

4.3(3)

Open in Bambu Studio

Boost

525

967

533

Released

Description

PUMP-2000: Customizable, Shell-Ejecting Toy Blaster (Plinker V3.5 Series)

This is a toy that fires a projectile! Never fire at pets or unwilling participants. This can damage drywall, use caution and protective eyewear. Never brandish this as a real weapon or bring it out in public. Just because you know it's a toy, doesn't mean other people will. Enjoy, be safe, and be smart!

DISCLAIMER: I am an amateur self-taught designer who creates these toy for free in there spare time. If you are looking for an easy 100% reliable toy blaster, I would recommend buying a nerf/airsoft gun or checking out some of the other incredibly talented designers with beta-tested models, readily available parts-kits and much better documentation (i.e. Spyr & Sillybutts on printables). If you're still here, Thank you and I hope you enjoy! Please feel free to reach out with any questions, concerns or constructive criticism

Introducing the PUMP-2000:

My best blaster yet, in terms of power, ease of use & assembly. This blaster boasts decent power and range, plus lots of different customization options, including a bolt-action conversion!

Features & Options:

Realistic Shell Ejection with printed, re-usable ammo.
Pump Action or Bolt-Action with minimal part changes.
3 - different Magazine options.
Sawed-off pistol grip or Full-stock with integrated grip.
Printable optic.
Compatible with KDS-MAC & BUMP45 Ammo.

A1 MINI BOLT-ACTION PISTOL NOW AVAILABLE

WHAT TO PRINT?

For the bare minimum required for a functional pump-action unit, using the least time and filament, please see the below list:

USAGE: 500g Filament - <20 Hours

Upper Frame
Lower Frame
Front Cover
Rear (Stockless)
Pistol Grip
Trigger
Striker
Striker Latch
Pump
Linkage Arm
Linkage Bar
Muzzle
Magazine Catch
Magazine
Magazine Follower
Magazine Base
Magazine Base Backing

FUNCTION VIDEO:

BUILD VIDEO:

PRINTED PARTS:

PART:	WALLS/TOP/BOTTOM:	INFILL %:	SUPPORT REQUIRED:	RECCOMENDED MATERIAL:
Lower Frame	3+	15%	Organic - Hybrid	Any
Upper Frame	3+	15%	Organic - Hybrid	Any
Front Cover	3+	15%	None	Any
Rear (Stockless)	3+	15%	None	Any
Grip-Stock	3+	15%	Organic - Hybrid	Any
Bolt	5+	25%	Organic - Hybrid	PLA, PLA+, PETG, Strongest Material you can Print (No Matte or Silk)
Striker	5+	25%	Regular - Normal	PLA, PLA+, PETG, Strongest Material you can Print (No Matte or Silk)
Trigger	3+	15%	None	PLA, PLA+, PETG (No Matte or Silk)
Muzzle	3+	15%	None	Any
Magazine Catch	3+	15%	None	PLA, PLA+, PETG (No Matte or Silk)
Pump Linkage Arm	5+	25%	None	PLA, PLA+, PETG (No Matte or Silk)
Pump Linkage Bar	5+	25%	None	PLA, PLA+, PETG (No Matte or Silk)
Charging Handle Linkage Bar	5+	25%	None	PLA, PLA+, PETG (No Matte or Silk)
Charging Handle	3+	15%	None	Any
Pump	3+	15%	None	Any
Pump w/ Foregrip	3+	15%	None	Any
Foregrip	5+	25%	None	PLA, PLA+, PETG (No Matte or Silk)
Handguard	3+	15%	None	Any
Pistol Grip	3+	15%	None	Any
Magazine	3+	15%	None	Any
Long Magazine	3+	15%	None	Any
Magazine Follower	3+	15%	None	Any
Magazine Base	3+	15%	None	Any
Magazine Base Backing	3+	15%	None	Any
Drum Magazine	3+	15%	None	Any
Drum Magazine Follower	3+	15%	None	Any
Drum Magazine Cover	3+	15%	None	Any
Drum Magazine Linkage Bar x 8	3+	15%	None	Any
Drum Magazine Linkage Connector x 10	3+	15%	None	Any
Drum Magazine Spring Cover	3+	15%	None	Any
Grip Panel x2 Mirrored	3+	15%	None	Any
Cheek Rest	3+	15%	None	Any
Stock Butt	3+	15%	None	Any
Stock Butt Connector Pin	3+	15%	None	Any
Dot Sight	3+	15%	None	Any
Dot Sight Reticle	3+	15%	None	Any
Bullet	3+	15%	Brim	Any
Casing	3+	15%	None	Any

POST PROCESSING: I tried my best to ensure that no post-processing would need to be done, besides support removal, but due to the overhang in the magazine catch slot there will be some cleanup required.

MAGAZINE CATCH - Use a metal file to clean up and remove any sagging filament or remaining support material in the magazine catch slot (lower frame). Sand the sides of the magazine catch down so that it slides easily into the slot and moves backwards and forwards with minimal resistance.

PLEASE READ!!! IMPORTANT NOTES ON STRIKER, BOLT AND AMMO.

Striker: If printing in PLA the tip of the striker WILL flatten overtime, reducing power and accuracy. I recommend printing it with the strongest material you can print, to avoid having to change it out with frequent use.

Bolt: The extractor on the face of the bolt is another item that I recommend printing with stronger materials if possible. If shells fail to eject or are falling through the barrel, make sure the extractor is still protruding enough to catch the notch in the bullet casings.

Ammo: Ideally, the bullet and casing should snap/friction-fit together tight enough that they wont separate when dropped, but not so tight that they cant be pulled apart by hand with a little effort. The bullets/projectiles require a fair bit of precision for a proper fit so if your machine & settings aren't well tuned you may run into fitment issues. If the bullets are to tight or loose, try printing another batch with a different filament and mix-and-match the casings and projectiles. A metal file can be used to gently shave a little material of the bottom of the bullet if fitment is consistently too tight.

HARDWARE: M3 FASTENERS

Length (mm)	Number Needed	Usage:
M3 x 8	2	Foregrip - Pump
M3 x 12	6	Front Cover - Lower Frame - Upper Frame
M3 x 18	1	Magazine Catch
M3 x 20	8	Trigger, Striker Latch, Grip.
M3 x 25	2	Rear, Stock
M3 Hex Nut	19

HARDWARE: COMPRESSION SPRINGS

Wire Diameter: (mm)	Outer Diameter: (mm)	Length: (mm)	Usage:	Source:
0.8 -1.0 mm	10 mm	90 mm	Striker	AliExpress or Hardware Store*
0.3 - 0.5 mm	<5 mm	15 mm	Striker Latch	BIC Mechanical Pencil/Pen
0.3 - 0.5 mm	<5 mm	20 mm	Magazine Catch	BIC Mechanical Pencil/Pen
0.8 mm	10 mm	75 mm	Short Magazine	AliExpress or Hardware Store*
0.8 mm	10 mm	150 mm	Long Magazine	AliExpress or Hardware Store*
0.8 mm	10 mm	195 mm	Drum Magazine	AliExpress or Hardware Store*

*SOURCING SPRINGS: Compression springs in the exact lengths needed will be almost impossible to find, I purchased 300 mm long springs from AliExpress and cut them down the required sizes. I have used springs from both Seiko Hardware Store and Chong-su Spring Store on AliExpress but there are many other vendors available. Use the wire diameter and outer diameter to help guide your purchase.

Comment & Rating (64)

@sergejbubko

Boosted

Hi. Few pumps and handle broke. I will print it one more time with more perimeters and will see. Maybe some redesign in this spot could help a little. I also had problems placing the spring between striker latch and lower part of the body. I drilled 4 mm hole and place spring in it. There is a space for fixing the spring in correct spot to the lower body but there is not any in the striker latch. It was much easier to assamble it with drilled hole. I printed the same part with negative volume, see photo.

(Edited)

The designer has replied

@BrewBoyBlasters

I'm sorry to hear about the foregrip breaking, more perimeters should definitely help. As for the striker latch, I updated it with a pocket for the spring on October 14th so you may have been printing the earlier version without a pocket for the spring. let me know if more perimeters work for the foregrip, but another option is using one of the harder TPU filaments

@sergejbubko

Boosted

Replying to @BrewBoyBlasters :

I added height range modifier from 0 to 20 mm with perimeters only, will see if it helps. I have previous version. I was waiting for springs with already printed parts and didn't notice a new version. Bolt and striker from ASA doesn't seem to help, what material did you use for it? I will try PC after drying the new spool. ASA form Eryone managed few shots, now the bolt doesn't catch the bullet casing and striker has no tip :(

@BrewBoyBlasters

Replying to @sergejbubko :

I've also updated the bolt and striker around the same time to improve there strength. I changed the pointed tip of the striker and added a chamfer to the edge of the bolt so it can be printed at a 45 degree angle. Unfortunately they will wear out over time just due to the impact they take, but you should be able to get 50 or more rounds through before having to worry about that. I would reccomend PLA or PLA+, nothing with any additives, although my PLA-CF bolt has been holding up really well.

@recitationalpri

Boosted

do you think you could make a model with detailed edge trims for things like contrast color separation or glowing fillament areas?

The designer has replied

@BrewBoyBlasters

Probably, would you mind drawing out the areas you want separate trim/colour on a picture of the model, doesnt need to be too detailed but it would help guve me a better idea?

@recitationalpri

Boosted

Replying to @BrewBoyBlasters :

I'm on vacation right now so I can't really draw, but what I'm thinking is something like this design, all the angles are highlighted in orange and it gives you more of a sense of depth and shape.

@BrewBoyBlasters

I'll look into the best way to implement that

@eBoB

Boosted

Print Profile

All Parts & Attachments - 0.16mm layer, 3 walls, 15% infill

Easy print with minimal cleanup required. Works well, just waiting on some better springs

@BrewBoyBlasters

That orange looks really good! gives it a cool space vibe!

@sergejbubko

Boosted

Print Profile

All Parts & Attachments - 0.16mm layer, 3 walls, 15% infill

Printed nicely. Only the two parts printed diagonally are bent. I have to make sure the plate is positioned well on printbed next time. Despite being bent it can be assembled anyway. Maybe applying some heat after assembly could straighten the part. Some parts are optional, nevermind. Nuts (w=5.44 mm) fits nice. I recommend longer bolts (M3x10 mm) for pump with foregrip. I am looking forward to receiving the springs:)

@BrewBoyBlasters

Sorry to hear about the warping, glad to hear everything else is working ok though!

@sergejbubko

Boosted

For the first time I am using supports with separation layer of PLA (part is from PETG) and I have some pretty nice results. The green layer was inside. TBH I had some issues with it in the tree supports, so it is not universal to all issues with supports. But for normal supports it works great. Here are some settings from project "Light flood for closed Bambu lab printers" by @JorgeRui: Advanced: tree support branch distance: 3 mm Top Z distance: 0 mm Bottom Z distance: 0 mm Top interface spacing: 0 mm Top interface layer: 3 PLA to PETG (green to red) and PETG to PLA (red to green) flushing volumes set to 600 BOTH. More details on his project.

The designer has replied

@BrewBoyBlasters

that supported areas looks awesome!

@RamosUnity

Boosted

Print Profile

All Parts & Attachments - 0.16mm layer, 3 walls, 15% infill

Strength Issue:foregrip broke on first pump with spring installed, but more importantly, extractor on bolt breaks almost immediately and fails to extract rounds or keep them in the chamber, tried with PLA and PETG for bolt with same result.

@BrewBoyBlasters

I'm really sorry to hear that, one way to strengthen the foregrip would be to split it half vertically in the slicer and super glue it together. As for the bolt, I'm not quite sure what to do about that. I've gotten over 100 rounds through using PLA, PLA + and PLA-CF without any part changes. It should be able to go at least 50 shots before replacement, but the bolt and the striker will need to be replaced periodically due to the forces exerted on them

@MedizinJann

Nice design, im just curious if this is legal to print here in Germany lol. Could be seen as a weapon because it accelerates a projectile trough a barrel and isn't analyzed by the federal police. If it's legal, I'll print it definitely lol.

The designer has replied

@BrewBoyBlasters

If nerf or airsoft are legal you should have no problems with this. If you have something similar to imitation weapon laws we have here in Canada you might need to make sure it's printed in bright toy colours and obviously never bring it out in public. It's not crazy powerful, might leave a welt at point blank and will definitely damage drywall, but it's less powerfull than most airsoft guns

@MedizinJann

Thanks mate

@sergejbubko

Boosted

My first thought after printing plate #7 is that it would be nice to mention in the description or in step file name that it is optional to print some parts. I noticed the difference in #1 and #2 and also #4 has two optional parts on the same plate. I didn't notice it on plate #7 before printing it. Maybe it is just me... Edit: Also there are 3 types of magazines, which is mentioned in the description, and the drum mag has two versions too, but at least there aren't on the same plate :)

(Edited)

The designer has replied