Search found 10814 matches

by Mark
Mon Nov 11, 2019 1:05 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

So the copper and aluminum jacketed jars were a bust but in a sluggish way. Interestingly, after the roughly 10 second runs both jars were not hot to the touch, but after they stopped for several seconds it was like listening to bacon frying, the methanol sizzling against the walls of the metal line...
by Mark
Sat Nov 09, 2019 10:24 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

I got out this old syringe I'd run many years ago. A somewhat similar ear syringe ran 7 minutes when submerged in water. I had one of those flimsy thin aluminum pie pans with a center hole cut out skirted over the syringe to block the steam from the water bath getting sucked into the barrel of the s...
by Mark
Fri Nov 08, 2019 1:37 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

Maybe tomorrow if the humidity is down, these aluminum flashing and copper foil lined 12 ounce jam jars will last longer than without the foil. The fuel in the bottom might cool the foil somewhat or rather the heat in the foil transfer some to the fuel. And perhaps the copper foil will produce some ...
by Mark
Wed Nov 06, 2019 8:03 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

With 2 milliliters of methanol and some patience I was able to get some cycles. Ideally it could be cooler and less humid for maybe double the time seen here. At this rate my 2 gallons of methanol should last for some time. ha Miniature Quartz Jam Jar Jet Spinning Slowly https://www.youtube.com/watc...
by Mark
Tue Nov 05, 2019 4:07 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

I was trying to figure a good/elegant way to hold the jar without much effort or the risk of melting silicone and it sticking to the jar so I just did some fused quartz chopsticks or 4 mm quartz tubes that were intended for military infrared flashlights/ the weird stuff you find on eBay. It surprise...
by Mark
Sat Nov 02, 2019 6:30 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

This being Day of the Dead and all ...
Day of the Dead Jam Jar Jets
https://www.youtube.com/watch?v=vY8vpUiFins
https://en.wikipedia.org/wiki/Day_of_the_Dead

And some Halloween jars
Store-bought Jam Jar Jets
https://www.youtube.com/watch?v=GEgXyf2NevM
by Mark
Fri Nov 01, 2019 1:23 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

I was trying to think of something the little quartz vial could do, say to cause motion in bees or hummingbirds, a little kinetic art diorama of some sort. There's several designs of fidget spinners, they could spin up under the power of these tiny quartz jets, but nothing really enthralling has co...
by Mark
Thu Oct 31, 2019 7:19 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

Some prototype experiments with small snorkelers and other tidbits are pictured here. There're 7 fused quartz sleeves and fused quartz crucibles in the one photo. One is not even an inch tall but I haven't found a lid and way to try to run it yet. The two quartz crucibles with the blue and green sil...
by Mark
Sun Oct 20, 2019 1:06 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

A few more designs of the 4.5 inch tall store-bought jam jar jets. The sides get hot very fast so some sort of design where the internal flame is more focused or narrowed, or sleeved with an internal heat shield or partition wouldn't hurt. https://spookylittlehalloween.com/wp-content/uploads/2017/08...
by Mark
Mon Oct 14, 2019 10:04 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1770
Views: 369421

Re: Odds and ends

I bought one of these witch glass milk bottle jars today for 69 cents at a thrift store. These have always taunted me because they seemed potentially a no-build jam jar jet par excellence. The height is about 4.6 inches or 118 mm. The lid 2 inches in diameter or 50 mm. When the silicone grommet is r...
by Mark
Tue Sep 17, 2019 7:22 pm
Forum: Off topic forum
Topic: Nature's Children
Replies: 698
Views: 200744

Re: Nature's Children

Fused quartz jam jar jet hummingbird feeder
by Mark
Sun May 12, 2019 5:10 pm
Forum: Off topic forum
Topic: youtube
Replies: 1461
Views: 217917

Re: youtube

Simple Bottle Rocket Launcher (Propane)
https://www.youtube.com/watch?v=iiH1l3zTSaQ
by Mark
Sun Apr 21, 2019 2:18 am
Forum: Off topic forum
Topic: Luc's Back ... ;-)
Replies: 5
Views: 1936

Re: Luc's Back ... ;-)

Welcome back, funny how an interest in pulsating combustion/creativity and imagination comes and goes. I have a lot of stuff accumulated and wonder if the mood will ever strike again to experiment with my materials gathered over time.
by Mark
Sat Mar 30, 2019 1:35 am
Forum: Off topic forum
Topic: youtube
Replies: 1461
Views: 217917

Re: youtube

World's First? Lennox Pulse Jet made from a furnace
https://youtube.com/watch?v=fAQ7sMl_41g
by Mark
Sat Mar 16, 2019 3:57 pm
Forum: Off topic forum
Topic: youtube
Replies: 1461
Views: 217917

Re: youtube

Maybe of interest, be nice to have for some projects.
Drill through anything (conductive) with Electrical Discharge Machining
https://youtube.com/watch?v=rpHYBz7ToII