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The old book "The Boy Electrician" by Alfred Powell Morgan included plans for a small 10 Watt model dynamo somewhat similar to the Edison unit in post #16. The book is old enough to be in the public domain so you can find PDF's of it on the web. I have an old hardcover edition around here...

Just as an FYI: Anyone looking for a free or inexpensive 2D software package may want to check out Nanocad. They have a free version that you can download and use, as well as some modestly priced ($100-$200 US) versions with added capability. They of course have more costly versions, but if you...

This is an interesting technical demo of the Corliss valve gear from the New England Wireless and Steam Museum: If you look around their youtube channel or website site, you will find a number of other videos about that particular engine, which is believed to be the only original Corliss...

Is it just me or does that company website look like it is largely designed to separate investors from their money to anyone else? Lots of claims are made about the many huge advantages of this design but give no hint that they have actually built and run one yet. Lots of statements about how...

Just as an FYI, it appears that you can still purchase the pulse EDM book in digital format directly from the author's (Ben Flemming) website. This was noted earlier in the thread, but I think he still offered print versions at that point. It looks like he also still also offers "starter kits"...

Is the link to "vintage model plans" almega posted above the site that won't ship to the UK? It says they ship internationally for "a small charge" maybe it's worth checking with them if you like the plans.

The other interesting thing to note is the sheer size of these magazines. That issue was something like 280 pages. Smaller format than modern magazines and lots of ads for sure, but still lots of interesting content on a wide range of topics. It was a different world in so many ways of course...

I have no interest in screwing over anyone. I have had some small stuff published in the past and realize how much work writing even a short article can be. Again, this book was published over 100 years ago by two authors who have loads of similar work in the public domain. They died over 50...

I got a notification that the post with the link to the jigs and fixtures book was deleted because: "The Internet Archive was likely breaching copyright so we don't promote it here." Note that the book I linked was published in 1913 and was "digitized by Google from the library of the...

No problem, glad that (for once...) I had something useful to offer. In addition, the afore mentioned Carr-lane book is available $9.95 as a Kindle book from Amazon here: https://www.amazon.com/Fixture-Handbook-Carr-Lane-Manufacturing-ebook/dp/B01EBEHNMS/ref=mt_kindle?_encoding=UTF8&me= It...

If you are in the US, McMaster-carr sells these in various colors. I have found them to work pretty well. Search on their website for "paint crayons for recessed characters"

I would expect that those are not legit and are bootleg scans. So far as I know Village press does not offer any of their stuff in digital format.

I suspect ferric chloride might eat the steel file more than the chips. Another handy "tool" for cleaning pins from files is to use the end of a bamboo chopstick left over after your next round of Chinese cuisine. They are hard enough to scrape out between the teeth but obviously will not do...

Thanks, I have seen that, his videos are awesome. I do pretty much the same thing as my filer does not really require a special tang on the file, it's just a clamp type thing. So as long as I can get it to fit, it works ok. Some of the more useful things I've found are flat files with a safe...

Gary, your post appeared as I was typing out mine. In my opinion, 15 bucks each is a very fair price for anyone looking for these. As mentioned, a decent hand file of any type costs that or more. I'll be in touch... Thank you.

I was given a nice die filer a while back and did some looking around for files for it, like everyone else that gets one. There do seem to be a few places still selling them. Here are just a few (in the US anyhow) that I stumbled on...

I love going through those old magazines, there is so much interesting stuff in them. That's $20 well spent, I think. As an aside, all of those old Popular Mechanics, Popular Science and lots of other similar magazines are available free on-line through Google books. Some may not be accessible...

Hi, This sounds quite fascinating. Do you have any further info on this set like the publisher, the editors or author, publication date, etc? I'd be curious if it can be found on Gutenberg or some similar site. If not, it should be!! I don't seem to be finding a clear reference to it under the...

Just to clarify, that is $40-$70 per published page, not per submission. I don't recall all the details but they also pay some additional per photo, and extra if you supply finished drawings. You can email them to request a copy of their "authors guidelines", it will outline all of the details.

I just bought a bunch of "split firebrick" (that is what brick masons call them, I asked at the supply place) to reline my wood stove. They are 4.5" X 9" and 1.25" thick. They cost me $1.17 each from a local (I'm in NE Mass., USA) masonry supply place. They cost nearly 4 times that at the local...