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All the detailed cost calculations above only use the pump price of gas in the cost per mile for gas cars. There is no consideration of the costs to society of the CO2 produced. As the island nations of the Pacific have recently told us, this will be countless billions of dollars. Strapping on...

I decided on the Anycubic Mono 2G as the resin printer that I wanted but as I dithered and flustered the 4G popped up at a reasonable price. I watched some you tubes on the difference between the two and the general consensus seems to be that it is not much. I am leaning towards the 4G anyway...

So is there any info on how much SS to add to the sand? It is a liquid so maybe it’s by weight?

Hmmm. In thinking about it I remember reading that high temperatures alone will cause sodium silicate to set without using any CO2. So maybe I can burn out the pattern just like with lost wax. Except you wouldn’t need the long complicated heating program on the kiln that you need to cure the...

If I try a lost wax style setup with Sodium Silicate sand and I can’t heat it to melt out the pattern maybe I could make the pattern from urethane foam and dissolve it out with a solvent. If I used Acetone and soaked the mold in it that would make for an exciting pour. I could just pour the...

I understand that getting a sodium silicate core out of a complex casting can be a problem. I recall something about adding sugar to cores to make them easier to remove. Don’t how much you add or what it does.

I am very interested in trying sodium silicate with fine dry casting sand as a mold material. Same idea as lost wax and plaster, using 3D printed models. If you set up the sand with CO 2 could the mold then be heated to burn out the model? Would the silicate sand hold together or would heating...

Well that isn't quite true. Have a look at this:

I was a long time climate skeptic and trotted out all the arguments about volcanoes and solar cycles and all the other arguments about nature causing the warming we see. And it does. It’s just that human effects are being piled up on top of that. CO2 is a natural product and cycles in relative...

Yeah but no excuse for us doing the harm. We know better. I mostly want to get rid of 10 oil changes and hauling gas all summer. I’ll take a solar cell and charging station any day. Way more efficient and I don’t get yelled at for gas stains in the car carpets.

The friend’s chainsaw was a major brand and quite expensive. Supposedly intended for serious users. As disappointed as I was with its performance I can’t help think that we are in a major technology change and all the solutions are ahead of us. I can imagine all the complaining about smokey...

I have a dozen or so small gas engines around the farm and I am very keen to replace them all with battery electric tools. I want one battery system though so have to wait a bit longer for yard and garden manufacturers to bring out a complete line of electric outdoor equipment. A friend bought...

It's been quite a while since I made up these files. I don't have a good handle on which files I used but I will attach all that I can find. The files with the "B" prefix are the bigger engine. The crank and pin for the piston end are drill rod. You will need small brass tubing for the ports...

I am casting about for a replacement for my trusty Sketchup program. I have used it for years but want a more fully featured CAD for engine projects. I tried the home version of Fusion 360 last winter and spent hours running tutorial videos. I found the logic and flow of that program...

Mark Wow some of those resins weigh in at $300/bottle. I notice that washing in ethanol is still recommended. Do you post cure these resins in UV as well? I am thinking of getting the wash cure machine offered by Anycubic when I buy the printer. I see that the Anycubic Mono 4K resin printer has...

You young folk have lots of time yet to mess around with setting up the situation that you want. As fossilization sets in the options start to close. Not sure if the rest home would let me sneak in a Taig or not.

Good luck with the move. We may be facing the same thing and I don’t look forward to moving the shop. Serves me right for accumulating all this junk. Thanks for your offer of help.

I checked that link and found the project. He doesn’t have an actual schematic of the circuits, just a diagram of the layout of components. I suspect that if you followed the diagram closely you could work out the wiring connections, although he has a flag saying no guarantee on accuracy and a...

Dragon where did you get the plans for your Arduino based controller? I’ve cobbled together Telescope controllers from plans on Sourceforge. I’d like to make a burnout controller like you describe.

I am interested to see how the casting resins work. I have a resin printer and washer/curing unit in my Amazon cart ready to push the “Submit Order” button but am holding off a bit to see if I can find info on actual experience with casting resins.