Bottle Rocket Launch Tube and Snow/Ground Spike
Description
For The Traditional German "Silvester" Fireworks On New Years Eve I Made A Launch Tube For Bottle Rockets Including A Ground Spike To Fix It Properly. The Idea Is To Have A Design That Is Semi-Disposable And Doesn'T Involve Dirty Glass Bottles That Tip Over From The Smallest Bump In The Ground. Also, The Launch Tube Can Be Rammed Into The Ground Perfectly Vertical Ensuring A Safe Ascend Of The Rocket. After Testing It With About 30 Rockets Last Year I'M Pretty Happy With The Design. There Are A Few Things To Consider, However: - The Type Of Rockets That We Use Is Usually Pretty Big (Ca. 80 Cm / 3 Feet). Therefore The Tube Is Long And Relatively Wide. It Won'T Work Properly With The Small Chinese Mini-Rockets. You Can Try To Scale The Model To Fit Those. - The Perimeter Is Small To Make The Printer Print Two Walls. That Thickness Should Suffice For Regular Pla In Terms Of Stability. - The Ground Spike Has A Slightly Larger Opening For The Launch Tube To Accomodate Printer Tolerance. Try It, If There Is Too Much Space, Just Put Some Folded Paper To Fix Or Glue Spike And Tube Together. If There Is Too Little Space, Scale The Tube Down A Tiny Bit. - Printing The Tube Bottom First And The Spike Pointing Upwards Is Recommended. Best Results Are Achieved With A Printed Brim To Keep It From Toppling During The Printing. - Long Spike Is For Firm Snow Or Soft Ground, Short Spike Is For Firm Ground Or Harsh Snow. - Recommended Settings On Printrbot: Wall: 0.8 Mm, 0.4 Mm Nozzle, 0.3 Mm Layer, 210 °C First Layer, 195°C Remaining Layers. 40 Mm - 80 Mm/S Speed. Use At Your Own Risk! Even Bottle Rockets Are Dangerous And Making This Thing Requires You To Take All Steps To Ensure A Safe Rocket Start. This Tube Can Break If You Print It Improperly And It Is Certainly Not The Way The Manufacturers Of Rockets Intend To Have Them Fired! You'Ve Been Warned, I'M Not Responsible For Any Damage You Cause Using This Thing!
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