http://wiki.nebarnix.com/w/index.php?title=Rocket_Tooling_bp_0.5&feed=atom&action=historyRocket Tooling bp 0.5 - Revision history2024-03-29T06:40:55ZRevision history for this page on the wikiMediaWiki 1.35.2http://wiki.nebarnix.com/w/index.php?title=Rocket_Tooling_bp_0.5&diff=26&oldid=prevNebarnixWikiSysop: Restored from archives2013-01-29T20:03:17Z<p>Restored from archives</p>
<p><b>New page</b></p><div>==Problem statement== <br />
Making rocket motors requires precise repeatability and control. Ramming and drilling is a messy process which results in terribly nozzle quality, bad repeatability, and increased risk. Drawing up some tooling for 1/2" bp rockets would be a great way to get a motor that I can make again and again without the guesswork. I also want it to be end-burning so that the power can be dialed in with chamber length, as well as for ease of delay charges at the end of the grain. <br />
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==Device Description==<br />
The tooling was made by Master Maine Machinist Gary Sweatt. I measured the amazing work he did and brought it into solidworks with the intent on reproducing it as well as for making variations at some point. <br />
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==Lathe Profile ==<br />
Drawn up in solidworks, will be posted soon. <br />
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==Results ==<br />
Fine clay coated with 5% toilet bowl wax (dissolved in xylene, mixed, and allowed to evaporate) makes a beautiful nozzle with a waxy sheen that is rock hard. I have not have a nozzle failure since I switched from motor oil to the wax. <br />
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Motors can be as short as 2" and as long as 5" though a high quality tube must be used to avoid burnthrough just above the nozzle (since it is as end-burner, this is where the flame will dwell the longest).</div>NebarnixWikiSysop