The soda bottle air tank that everyone has been waiting for is coming! It is capable of continuous air supplying, safe and low-priced. After trying a bunch of different methods and going through a lot of materials, I found the best solution at last! Let us take a look at the series of changes!
The design concept of soda bottle connector differs from general design due to the coordination with 3D printing materials. For example, avoid using support material while designing components.
ver.1 (fig.1.) The connector is composed of a traditional cap and a washer. The airtight is incomplete and the cap could loosen up easily during movement. ver.3 (fig.3) A plug-shaped thingy is created, placed into the opening of the bottle, and fixed with 4 screws to keep the cap from loosening up.
ver4 (fig.4) Replaced the material of O-ring with silicone rubber and achieved 99% airtight. However, air leaks from the contact surface between PU tube and 3D printed part. Though the contact surface could be glued to reach 100% airtight, it causes a lot of trouble. Eventually, ver5 (fig.5) is able to keep all air pressure from the surface of 3D printed part by plugging the bottle with a cork (rubber stopper) and inserting a PU tube to achieve 100% airtight.
Airtight can be completed with 3 silicone O-rings yet, the contact surface between PU tube and 3D printed part wouldn’t be sealed.
Airtight can be completed simply with a cork, followed by a 3D printed part to fix it in place.
(fig.8.) To improve the appearance, I created S-Path, a part that moves the air pump upward. Originally the part was 100% fill 3D printed, later replaced by pneumatic quick coupling connected with PU tube due to airtight problem as mentioned earlier.
fig.9. complete assembled illustration of B&B Mini hopper + Mega tank + S-Path
fig.9. 組裝完成圖 B&B Mini hopper+Mega tank+S-Path
The mechanism of cylinder rotation is powered by pulling the trigger. However, the rotation could be smoother. So far, I’m trying to fix this problem.The development of Mega tank has come to a temporary end. It’s time for cylinder. The below image (fig.10.) is a prototype in testing phase.
At the end, let’s talk about other things. First, during manufacture, filament often ran out without my knowing. Therefore, I installed an optical filament runout sensor. The alarm will be triggered if the filament ran out or broke, indicating the filament needs change or refill.
Then, it comes to JSPB check valve 3D. The design concept is fairly simple. I hope that people are able to print their own check valve at home instead of buying expensive ones or ones that breaks easily. Simply print it yourself.
再來是JSPB CHECK VALVE 3D,這個的設計理念很簡單,希望能讓人在家裡也可以列印出來的CHECK VALVE,你不需要去買很貴或是容易故障的CHECK VALVE,自己列印就可以了.
JSPB check valve 3D is not yet completed though many materials and parts have been tested. So far what I know is O-ring and marbles are not applicable. After preliminary test, Nerf dart tip and cork seems to work and are ready for further testing.
JSPB CHECK VALVE 3D 目前尚未完成,已經測試過許多材質與零件,現在可以得知的消息是,O-ring不可用,彈珠不可用,Nerf彈頭與軟木塞初步測試似乎可行,正要進入進一步的測試.
This is my recent progress and development for the last two months. Thank you!
Jangular分享了美國當地的Nerf war,影片中JSPB Pro2操縱如此靈活,應該平常有在練習!