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  1. M

    Arduino control of large processing Furnace

    "HiLetgo 3.5" TFT LCD Display ILI9486/ILI9488 480x320 36 Pins for Arduino Mega2560 " This display is very fast as it is parallel rather than serial, this allows a complete screen rewrite updating all variables this rewrite doesn't even have a noticeable flicker. it also comes in a touch...
  2. M

    Arduino control of large processing Furnace

    It has been a difficult decision to try to sell it, but it is reasonably profitable for the right person. I think I probably sell more ingots on Ebay then any one else. Ebay also doesn't allow you to sell the store etc. I do have the contact in formation for my whole customer base. But it...
  3. M

    Arduino control of large processing Furnace

    I use functions to separate control sequences which really helps keep things simple, I write and test the function then go on to the next function. for example the keypad programing is a function that can be called from multiple places. The menu sections are also separate functions. I use...
  4. M

    Arduino control of large processing Furnace

    actually the PLC are far more expensive and limited then a mega or an ESP the mega has 52 digital outputs or inputs as well as PWM for variable controls, and multiple analog inputs they direct connect to servos or as well as drives for stepper motors, It can feed inputs to variable drives...
  5. M

    Arduino control of large processing Furnace

    This may sound a little abnormal but the diagrams etc follow the code for me. I write the code and then workout the components. I came from the commercial HVAC industry and have an extensive mechanical, electrical and combustion background. I have programmed PLC and when the Arduino came...
  6. M

    Arduino control of large processing Furnace

    I have been running this foundry for over ten years, my total processing has been about 28 tons of finished ingots. The ingots test out to very close to A356 with, the only thing out of spec is the amount of FE. I have pretty well cured that by using only clean cast (no Iron) it runs...
  7. M

    Arduino control of large processing Furnace

    Repost I have used the Arduino for many projects, CNC Control of a long-arm quilting machine, many lighting controls for shutting off the lights etc in the shop, Temp control for radiant heaters that were manual control originally, Control system for use in converting a central AC system to...
  8. M

    DIY hand held Hall Effect tach with Arduino

    I have used the Arduino for many projects, CNC Control of a long-arm quilting machine, many lighting controls for shutting off the lights etc in the shop, Temp control for radiant heaters that were manual control originally, Contol system for use in converting a central AC system to a...
  9. M

    Cast Dog bowl use 356 aluminum for sale.

    Just heads up about what 356 is worth, We have a commercial foundry that sells it in 90 lb ingots for 415.00. My clean scrap cost .64 per lb I sell 20 lbs for 100.00 including shipping so don't just give it away. Art B
  10. M

    Aluminium casting problem.

    The pictures are showing entrained gases probably Hydrogen. This can also be caused by pouring too hot. I use calcium hypochlorite as a degassing agent. Below are the Flux recipes I use, this is part of the information I send out with all of my orders. Flux recipes Drossing Flux (used in our...
  11. M

    Which Spindle coolant to use?

    If you are using an open system like a cooling tower you will need to dump water to kill the algae problem also a cooling tower as it runs causes any mineral content To be increased, This causes scaling problems if the water isn't changed fairly often. You didn't say haw you are getting the...
  12. M

    Recasting a broken casting.

    I process engine aluminum engine castings into ingots about 800 lbs per month, wheels any newer than mid 80s will be 356 alloy, There are some mag automotive parts, some transfer cases, Audi / Volkswagen engine parts, if something feels to light I cut off a bolt flange and torch it on fiber...
  13. M

    Harbor Freight / Rong Fu Improvements (HF #33686 Round Column)

    This is a modified Drill press that I se for a mill, with all mods it will handles a 2.5" face mill in mild steel, most of my milling is in aluminum. The finale Fine feed mod was the spring loaded cam for easy milling to drill press change over. if interested if have autocad drawings for the...
  14. M

    Melting aluminium sheet metal comparison.

    I think I'll pop in here, I process automotive power train parts into ingots for the Hobbest and ship allover the US I have shipped some outside of the US but the shipping triples the price. I have processed 30,000 lbs in the last 5 years shipped i 40 lb boxes. I started my foundry when...
  15. M

    Harbor Freight / Rong Fu Improvements (HF #33686 Round Column)

    if any one would like a fine feed for the quill on these early HF mill drills, I made one for mine and I have the prints if any one would like them. Art B
  16. M

    Temperature of the exhaust of model engine

    I work with youth quite a bit in and around my foundry I talk about safety when pouring , one of my things is footwear that is leather, and no laces. ( i do mostly aluminum) That said there are those that wear sandals, tennis shoes etc. they may gainsay the the need for functional foot wear...
  17. M

    Precision?

    The last ten years before I retired I worked as a commisioning agent in the HVACR and Electrical systems, I had to write the tests to verify that the system would work as intended(not necessarily as designed) If you want to find out if somithing will work as intended you test for the negative...
  18. M

    How to tune a foundry oil burner

    fuel flow is a product of pressure across an orifice, increasing the pump speed puts more oil in a small space increasing the pressure. The flow rate through the nozzle is a pressure difference. the answer above is more oil volume which increases the pressure untill the new volume from the...
  19. M

    How to tune a foundry oil burner

    The problem with any burner that is red hot is that it is acting as a firebox, the reason for the blue flame is that the oil has been completely vaporized and has substantial amounts of excess primary air. A burner by definition is a device that atomizes the fuel, mixes it with sufficient...
  20. M

    How to tune a foundry oil burner

    Pat; on your going to the pressure nozzle, bear in mind that the atomization compressed air is providing about 20% of the needed combustion air. you may find that the flame w ill be forming further into the furnace, the pressure nozzles come in different cone shapes I think you will find the...
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