BigCotton89

Ok well it's been a few days but I've kind of figured it out. That pump that I posted a link to... well the very next day I went out into my small town hit up all of the scrap yards and amazingly found it for free! Matt, to address what you said, I will be using an old electric leaf blower for the pumps motor. It doesn't reach the 3450 rpm that the pump is rated at but I don't want it at 100psi and with the added air flow of the blower I think it will do fine. My flow regulation will be a ball valve that I'll test different openings for about 1gph. Instead of using an atomizing nozzle I will use a mig welder tip set in a 1/8" x 2"-4" brass nipple (saw an article by popular science where they did this with good results). because of the way the pump was used before I had it in an oil burning furnace there were some odd fittings on it but they were already sealed good and they were free so I worked around them. I'll be working on it for the next couple of days, or weeks, and when I finish it I'll give details and post pictures. Thanks for all the help ya'll! Oh, Dan, it's not so much the price or that I don't like propane; it's more of the fact that I have no real workshop so I have to carry everything into my back yard every time I fire-up and since I'll be using a propane tank to hold my fuel lugging two around is very impractical. Besides, I like in the backwoods of N.C. there is more than enough free fire wood to preheat with.

Well I think I'll try this with Ron Reil's burner design or something similar to that video you posted matt.

Ok I got a little busy looking for stuff but it seems the conversation has come a long way. I really don't know much about these thinks but to my understanding this oil pump might do what I'm looking to do. I'd really appreciate if one of you with a bit more knowledge on the subject could explain to me how exactly this would work. http://www.dultmeier.com/products/0.851.866/7048 http://heating.danfoss.com/PCMPDF/DKBGPG010A702.pdf Looking at this it would seem that this is a centrifugal oil pump that runs purely off of the rotation of the shaft on the side at the rpm that it's rated for. It also says that the pump is designed to be gravity fed, it seems to work similar to the blower to force the oil out, so I can only assume that it requires no compressed air. With all of this in mind, my question is "If you connect this pump to a motor that matches it's rated rpm's and them run an output line to an atomizing nozzle, seeing as the put supposedly outputs 3gph at 100psi, could you get similar results to using compressed air." It kind of makes since because these pumps are used for oil burners.

I didn't think of the amount of force it would take. I saw a video somewhere on youtube where the person who built was running the fuel line a 3-7.5 psi and he said that that was enough to atomize the oil and then he had a blower hooked up to the back. with that in mind I would need a max. of roughly 850lbs of pressure. While that still might be difficult to do it's much more achievable.

Ok this may seem like a really stupid idea but it's worth putting out there. To "atomize" the oil to some extent is difficult without compressed air but what if you were to use a gravity fed system through one of the mesh lined atomizer nozzles and in the oil tank do kind of a piston pump idea with a liquid tight plunger that you can force the oil pressure to build up and exit the nozzle with more force. My other idea was to mount a small motor on the top and put a dremel wire wheel bit down in the pipe with the oil feeding onto it so it would break up the flow. It wouldn't be as fine as with compressed air but it would be a bit finer than a solid streak and a blower at the back like "the brute".

Man Matt! you're just full of ideas aren't you? every time I check this thread you've given me another great idea. When I finally get this forge built most of the credit will go to you.

Well as you said I need to get the oil atomized to the point that it is combustible. Now here is my major problem and it might be asking a little much but if I can possibly avoid it I would like to keep from using propane or an air-compressor. I saw the video that you posted earlier in the thread and it seems like a great setup but I want something that uses nothing but waste oil and a blower. http://www.backyardmetalcasting.com/oilburners09.html the "brute" shown here is somewhat along the lines of what I had in mind and that might be what I end up building. I just wanted a slightly refined design to it. Also, with this idea what size blower do I need. I might be going for 120-134 cfm but is that not enough or overkill.

thanks for the suggestion matt. i'll be sure to check that out. if anyone has any suggestions on how i can do that id appretiate it.

Howdy folk! This is my first day with an account but iforgeiron has long been one of my main resources for information. I am posting on this thread because I need help. I want to build a small waste oil forge for some basic bladesmithing. Now I'm no expert on the workings of oil forges as I just discovered them last night; but I threw together a quick design on google sketch-up to see what everyone's opinion is. Now remember this is only a very rough draft of the Idea but it atleast gets the general idea of what I want to build out there. Anyway, this would be a gravity fed waste oil forge. the inside of the forge it'self will be lined with durablanket or something of the likes and that is a small firebrick at the bottom. I would be using a blower as my propulsion system obviously. None of this is to scale or far from perfect. I just want to know if the general idea would work and any suggestions are more than welcome. Thanks in advance y'all!