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What were your first experiments when you got in to this hobby? I started with one of those kids chemistry sets, back in the early '70s when they had interesting st ... |
5-12-2017 at 14:34 by: Twospoons |
Making an induction heater for fastener removal? If you are still keen on making an induction heater then http://4hv.org is the place to go for advic ... |
4-12-2017 at 19:36 by: Twospoons |
Making an induction heater for fastener removal? Screw extractors tend to be made of hardened steel , and are therefore brittle. If an impact wrench ... |
3-12-2017 at 12:57 by: Twospoons |
Growing a CuSO4 crystal using a "hydrothermal" process I thought I'd have a crack at growing a copper sulfate crystal using a setup based on hydrothermal c ... |
2-12-2017 at 15:06 by: Twospoons |
Hydrogen Generator [rquote=498916&tid=78558&author=aga]What reaction conditions did you use ?
Al powder, chips ... |
29-11-2017 at 13:27 by: Twospoons |
Hydrogen Generator I used Al + NaOH for a much more mundane purpose: filling balloons. I found three things: it was pr ... |
28-11-2017 at 16:07 by: Twospoons |
Net Neutrality vote coming up - call your rep, sign petition, post on FB to tell others - SOMETHING! When you explain it that way net neutrality makes even more sense for the consumer, and I realise th ... |
23-11-2017 at 18:46 by: Twospoons |
Net Neutrality vote coming up - call your rep, sign petition, post on FB to tell others - SOMETHING! Every 'unlimited data' contract I've seen has a fair use clause, which basically means if you try to ... |
22-11-2017 at 16:45 by: Twospoons |
Net Neutrality vote coming up - call your rep, sign petition, post on FB to tell others - SOMETHING! I thought the ISP's job was to sell you a connection to the internet, not decide what you should or ... |
22-11-2017 at 13:50 by: Twospoons |
respirator for soldering fumes You might like to look at the wikipedia page on solder. The list of alloys is enormous, each with di ... |
22-11-2017 at 13:28 by: Twospoons |
respirator for soldering fumes This all begs the question: why? Is it just for the fun of restoring old equipment? Is it destined f ... |
21-11-2017 at 14:42 by: Twospoons |
3D Printer I built my own. It will handle objects up to 240mm diameter and 300mm high.
I am, of course, st ... |
21-11-2017 at 14:12 by: Twospoons |
new way of PCB via plating Did you weigh the pcb before and after to determine how much copper was plated out? |
20-11-2017 at 18:11 by: Twospoons |
respirator for soldering fumes I'll second Bert - don't use acid flux for electrical work. |
19-11-2017 at 19:42 by: Twospoons |
difficult soldering job You're talking about vapor phase reflow soldering - not really something for the home lab. Hot air ... |
9-11-2017 at 12:57 by: Twospoons |
difficult soldering job I would expect either both or one LED to be on in the case on a defective chip. Unless its shorting ... |
7-11-2017 at 19:09 by: Twospoons |
difficult soldering job [rquote=496695&tid=78045&author=Magpie]I am not an expert in electronics but 1nF seems like ... |
7-11-2017 at 14:09 by: Twospoons |
difficult soldering job Yeah, the 1nf isn't really needed. You can just leave that pin open. |
7-11-2017 at 01:39 by: Twospoons |
difficult soldering job If you are doing a bit of breadboarding, a nice thing to have is a mixed bag of capacitors, and one ... |
5-11-2017 at 17:20 by: Twospoons |
Tinkering with flyback generator for ozone The basic idea of resonant converters is to take a problem - uncontrolled ringing due to parasitics ... |
5-11-2017 at 12:02 by: Twospoons |
difficult soldering job I trust you have a fine tip soldering iron? And fine solder? And by 'breadboard' I assume you mean ... |
5-11-2017 at 11:34 by: Twospoons |
Tinkering with flyback generator for ozone There are several things which could be affecting your dielectrics: heat, excess voltage, and in the ... |
3-11-2017 at 17:20 by: Twospoons |
Air compressor powered vacuum pump It will work just fine with a domestic compressor, but they use a lot of air, so the compressor will ... |
31-10-2017 at 22:17 by: Twospoons |
Tinkering with flyback generator for ozone I'm surprised your MOSFET hasn't died. With no current control or feedback you're really just trusti ... |
31-10-2017 at 12:21 by: Twospoons |
Non-oxidizing or corrosive lubricant for aluminum drilling I used kerosene regularly in the machine shop. |
24-10-2017 at 21:21 by: Twospoons |
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