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  • BrianH437 commented on Engineer777's instructable 3D Printable Airsoft Gun5 months ago
    3D Printable Airsoft Gun

    Thinking about it a little more, there is a notch in the barrel, which means the barrel is suppose to but up against the bolt tube...IE the bb sits in the barrel when it is ready to fire...makes a lot more sense, so all I should need is a length of 7mm OD 5mm ID and 9.5mm OD and 7.8mm ID tube correct? assuming the flexible fillament will stretch around the barrel that is.

    Thanks for the replies guys,I am still having a hard time tracking these parts down, do you know if anyone has tried printing them with flexible filament? I picked up a roll yesterday, I am going to play with it a bit and see if I can get some settings dialed in, once I do that, I will likely model these parts and give it a go.to do this, I believe I need a 7mm od likely with a 5mm id tube that will connect to the bolt, I will take a measurement for the length later today. I am thinking 5mm ID simply because it will not allow for the BB to enter it. plus a 1mm wall should definitely prevent air from passing. The tube that will work in the hop unit will have a 9.5mm od. the ID is where I have a question, barrel side I think it should be 7.8mm, slightly smaller than the OD of the barrel, ...

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    Thanks for the replies guys,I am still having a hard time tracking these parts down, do you know if anyone has tried printing them with flexible filament? I picked up a roll yesterday, I am going to play with it a bit and see if I can get some settings dialed in, once I do that, I will likely model these parts and give it a go.to do this, I believe I need a 7mm od likely with a 5mm id tube that will connect to the bolt, I will take a measurement for the length later today. I am thinking 5mm ID simply because it will not allow for the BB to enter it. plus a 1mm wall should definitely prevent air from passing. The tube that will work in the hop unit will have a 9.5mm od. the ID is where I have a question, barrel side I think it should be 7.8mm, slightly smaller than the OD of the barrel, but where the hop slide pushes the other bb to give it the backspin, what ID should it have there ideally? I am wondering it it would be a good thing to have that taper so that there isn't a "sharp edge" where it hits the barrel?if this works I will definitely post the models for these, I am still waiting on some parts from aliexpress but I am hopeful to have the hop unit ready for when they arrive. thanks again for the awesome model!

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