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You need to use a flux to stop that, its one of the problems with casting alloys. Try a search for flux for metal casting. I've used Borax for casting aluminum, but i don't know if you need something...

My first router i used the carriages from two printers and made a body out of mdf, then used the belt drives and the shafts from the printers to hold everything. it worked okay and i guess i could...

Check out the yahoo groups for Gingery, his books all include scraping of home made stuff, plus in the group i have run across posts were guys have really made there lathe work better by rescraping...

I found this software for plotting and was waundering if anyone else has used it before.

http://www.profili2.com/ip%5Feng/
this is the homepage.

Aswell has anybody gone through this page or...

Anyone know were i can get rack and pinion stuff in edmonton alberta. I know mcmaster car has it but i need a local supplier. I was going to use the rack&pinion idea for my router idea. If there is...

You might not want to base any new board ideas on the ucn5804b chips as they are obsolete and may be hard to find. Some of the ideas in the open source forums are probly a better idea. But you...

I have had a bot project for sometime now. I have two 24v dc wheel chair motors. What i am looking for is a high current motor controller design. Most of the aftermarket stuff is way to expensive and...

The canadian code does reguire the neutral to be bonded at the panel in a single phase panel. Aswell you must bond the secondary on any transformers. As long as this transformer is not for isolation...

dude you do not want to buy one of ebay, i built one for about 15 dollars cdn. or about 12 bucks us. Goto Lothars site and build one of the pic designs. I built mine on a board with just the holes...

I'm in the same boat, i have been playing with pics for about a year now and i keep running out of time and end up with other projects taking over my time. I built the icd2 clone programmer from...

Very nice page. I've been looking for something along that idea for sometime. I deal with AB plc stuff at work to have something cheap and easy to use will be a nice project.

Silicone is put into aluminum for several reasons. As a hobby caster you have no worries about having to add anything to the aluminum as it is already an alloy. Unless your making zinc za12 or...

Hey Phil. I have one board nearly complete and two more boards that are yet to be populated. I am currently working right now so i will have to take some time to get one working. Did you change the...

For sure check ebay for a programming card, if there is not one with what you have, as well try and talk to the local tech college, they may be able to help. With the dealings i have had with AB they...

Problem with alot of the stuff that comes up like that on ebay is the weight. 300lbs would cost alot to have shipped from CT to say Alberta Canada. I watched a herburt turret lathe go for $1.67. It...

Deciding on size can be an issue, with the propane DIY fournace sizes its upto you. Mine has two bricks one on each side that come out and i can stick a piece of metal into the holes through the...

You can very easily and cheaply build yourself a setup to use as a forge and a fournace. I built my aluminum melting fournace to have two bricks come out right in the middle so i would have a through...

Another option is to build a transformer or modify one to get from 60 to 24 or 30 volts. Then use a lm317 to regulate the output.

If you want to learn some casting skills and build some shop equipment from scrap buy Dave Gingery's book series. I have a few of the books and wish i had bought them all.
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Very cool Tony, you will have to keep us upto date. I think thats a very neat idea to build a small radial engine. Have you fired it yet for any length of time?

I have some experience with microchip PIC's. None with AVR's. As microchip will give you as many as 10 free samples every couple of months i went with them. The 18F452 chip is nice i have a few...

I had an all in one board, didn't have the spindle or coolant control but it was a 3 axis board with onboard limit and home. Problem was i popped one of the driver chips and the whole board is...

In practice the current rating can not be exceeded, plus depending on application the current must have a rating factor. But the contacts on the relay should be more then enough to power a bigger...

Unbelievable truly, alot of work and i personally can not think of a better way to spend my retirement then having a project even close to that, look at the detail and work needed. Very neat.

Check out lindsay books, theres a how to on an plastic injection molder setup, one of Vince Gingery's books. Dave Gingery's books are excellent even if your not going to build the lathe or machine...

When i was in shop class in high school, along time ago, we used these little foam beads, put them in a metal shell, put a special clamb on the two halves and submersed it in boiling water. When it...

Smallest i have tried is 1mil spacing didn't work so well. I was trying to get down to 0.8mil so that i could use some of the lqfn chips i have, ended up using some boards that i found had a lqfn...

Yeah i blew a chip on that ucn5804b board and decided to build some new ones. I'm currently working on building several of Phil's designs from the open source area. You can use two motors there are...

I have used some magazines, some worked okay but others not so well. Best thing with a mag is they are pretty cheap when you consider it.

I do know one thing do not use Kodak paper, i have a...

Here's Bubba's how to, its not hard to get the wire off the transformer and even easier to put the new wire on, once thats done test the voltage and your done.
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