Friday, October 21, 2016

IBM Selectric III- High Resolution Font Scan: Prestige Pica

I recently repaired an IBM Selectric III typewriter, which has been a joy to use. For all of the old typewriter aficionados out there, at the bottom of this post is a 600 DPI scan of one of the entire font sets- for Prestige Pica, 10 pt.

Friday, October 14, 2016

Zenith 7H820Z Antique Radio: Disassembly

Now that I've determined that the radio has the unusual propensity to catch fire once plugged in, it's time to take it apart and fix the issue. Let's get to it!

Friday, October 7, 2016

Zenith 7H820Z Antique Radio: First Test

When on vacation in Savannah, Georgia, I picked up an antique tube radio for $35 from an antique store. This was a surprisingly good deal- the radio is in a great condition externally and has all of the original hardware that comes with the radio.

Friday, September 30, 2016

Rocketry Fuel Test: D

Now to test out an amount of propellant proportional to the amount of fuel in a rocket- this is about 1/2 of a propellant grain. Quite obviously, safety glasses and a face shield were used. 

Friday, September 23, 2016

Rocketry Fuel Test: C

I tested out a larger piece of propellant to evaluate the effectiveness and view how it burns, to see if it could mimic the way it would burn in a rocket motor. No luck! The solid products of the combustion reaction (in the thick, white smoke), are mainly KOH and K2CO3, and they blocked the view of the propellant almost completely.