prfesser's Recent Activity

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  1. prfesser replied to the thread John H. Wickman's How to Make Amateur Rockets Book.

    I'm more familiar with McCreary than I ever wanted to be...:) I bought Wickman's book, which has some very good features and...

    Jan 21, 2020 at 4:56 PM
  2. prfesser replied to the thread Starlite rediscovered?!.

    Vermiculite is widely used as packaging material and to start seeds. The stuff made since at least the 1990s -- if not earlier --...

    Jan 21, 2020 at 4:47 PM
  3. prfesser liked rharshberger's post in the thread New to DD: Questions.

    my mistake, however the rest of the statement still stands. None of the black powder substitutes are as easy, reliable, or consistent as...

    Jan 21, 2020 at 4:40 PM
  4. prfesser replied to the thread 1 : 1 Fiberglass Laminating Epoxy Recommendations?.

    It should work for laminating but it's a job getting the stuff worked into the glass. Watched a friend spend a helluvalotta time...

    Jan 21, 2020 at 12:31 AM
  5. prfesser liked Pat Gordzelik's post in the thread How do they make rocket propellant? An explanation:.

    [ATTACH] Yes! This propellant can even be used in a salt weapons. Pelosi is bound to shut us down..

    IMG_0933.JPG Jan 20, 2020 at 3:31 PM
  6. prfesser liked cbrarick's post in the thread How do they make rocket propellant? An explanation:.

    you forgot to mention the binder. Here's a shot of processing it.

    rubber_plantation.jpg Jan 20, 2020 at 3:31 PM
  7. prfesser liked mach7's post in the thread Apollo 13 question regarding the Service Module separation.

    Gene Kranz did not want to expose the CM heatshield to space for 4 days. It was not designed for that and keeping the SM attached would...

    Jan 20, 2020 at 2:56 AM
  8. prfesser liked jlabrasca's post in the thread Tips on finding materials to build Level 1 / 2 cert rocket..

    Not to gainsay what you just wrote, but since you just gainsaid what I wrote in #4 >smile<...

    Jan 19, 2020 at 7:38 PM
  9. prfesser liked Peartree's post in the thread How do they make rocket propellant? An explanation:.

    If you mix in enough siracha, will the motors burn today... ...and tomorrow?

    Jan 19, 2020 at 12:38 PM
  10. prfesser liked aerostadt's post in the thread How do they make rocket propellant? An explanation:.

    Now, if only they could find anti-matter that way!

    Jan 19, 2020 at 12:38 PM
  11. prfesser liked Bat-mite's post in the thread How do they make rocket propellant? An explanation:.

    i can sell you some ... cheap.

    Jan 19, 2020 at 12:38 PM
  12. prfesser liked bobby_hamill's post in the thread How do they make rocket propellant? An explanation:.

    I thought these wee folk made the propellant inside a tree trunk :D [ATTACH]

    th.jpg Jan 19, 2020 at 12:38 PM
  13. prfesser liked ECayemberg's post in the thread How do they make rocket propellant? An explanation:.

    My goodness Professor! Now I know I've been doing it all wrong. This should be the catalyst to ECP volume 2! :);)

    Jan 19, 2020 at 12:38 PM
  14. prfesser liked OverTheTop's post in the thread How do they make rocket propellant? An explanation:.

    Shouldn't this be in the restricted part of the forum :p.

    Jan 19, 2020 at 12:38 PM
  15. prfesser liked Wayco's post in the thread How do they make rocket propellant? An explanation:.

    Could you share your formula for NaCl propellant? I'm going to LDRS this year, I could pick up a bunch of it!

    Jan 19, 2020 at 12:37 PM