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  • Users: Ductmate
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  1. Ductmate

    converting a .ipj file to .dwg

    We're trying to do that, but it doesn't want to install for some reason. I'm sure if the IT guy ever gets around to it, it'll get installed, i'm just trying to get it done withouth waiting on them. Vince www.bloomautomatic.com
  2. Ductmate

    converting a .ipj file to .dwg

    We have some old files that were done in Inventor and are saved in .ipj format. Nobody has inventor on their machine any more, so we need to get these files into .dwg format or something we can work with. Does anyone have any ideas on how to go about doing that? I've never worked with CAD...
  3. Ductmate

    Making prototype zinc castings

    Not using any flux. I'm aware of the zinc fume thing. We weld a lot of galvanized steel here. Tried google, but most of what I'm getting is sites for companies that do zinc casting, not any info on the how-to side. Vince www.bloomautomatic.com
  4. Ductmate

    If you weren't an engineer, what would you be?

    Gunsmith, possibly gun manufacturer. Then again, that's kind of engineering. www.bloomautomatic.com
  5. Ductmate

    Making prototype zinc castings

    I want to make some prototype parts in the lab using zinc. What I'd like to do is take my existing part, cast it into some kind of media and be able to pour molten zinc into it. I know this is a VERY rudimentary set-up, but I don't really have the means (or expense) to machine a die to cast...
  6. Ductmate

    water base adhesive

    If the wool insulation is like fiberglass insulation, you shouldn't need much adhesive strength. Reason is, the insulation doesn't have much cohesive strength, so it will tend to pull iteself apart before breaking the adhesive bond. Solvent based product is more flammable than water based...
  7. Ductmate

    Efficient finishing/cleaning method for DOM tubing

    I don't have a centerless, it's just a wire wheel on bench grinder. It's not that slow, just too easy to miss a spot! Also, cost of the equipment is something of an issue for me. A small blast cabinet wouldn't be very expensive. Vince
  8. Ductmate

    Efficient finishing/cleaning method for DOM tubing

    BillPSU: The paint I'm referring to is the dot matrix print identifying the pipe manufacturer, size, etc. The 'coating' may only be a draw compound, but I still need to get down to shiny steel for the parkerizing to work! The tubing is 1-7/8" OD x 1-3/4" ID. unclesyd: What kind of media do...
  9. Ductmate

    Efficient finishing/cleaning method for DOM tubing

    I have a product that is made of 1 7/8" x 4" DOM carbon steel tubing with a machined bushing welded into one end. It has 3 8-32 threaded holes in it. I am looking for a way to efficiently remove the mill coating and paint from the DOM steel so that I can apply a phosphate (parkerized) finish...
  10. Ductmate

    Icebreakers

    Take everyone out for a day of playing paintball. Team work takes on new meaning when you're getting shot at. And shooting at each other should help to work out any personal frustrations. Vince
  11. Ductmate

    Rockford Ram Hardness Tester

    We have a Rockford Ram Hardness tester in our shop, model 30-R. The rollformer line operators use it to check the hardness of our steel (mostly galvanized). It's never been calibrated to my knowledge but the operators know what the usable range is. Someone lost the ball out of the indenter...
  12. Ductmate

    Respirators vs. dust collector

    Thanks to everyone who replied. We ended up having representative from our insurance company come in and evaluate the situation. With the dust collection system I have in place, they felt there was no need for respirators. I agreed, and so does the mixer operator! Vince
  13. Ductmate

    Coating test for Galvanneal

    I need a test that my warehouse people can do in the plant to distinguish between galvanized and galvanneal. We use copper sulfate to identify zinc coatings, but it doesn't tell between galvanized and galvanneal very well. Is there another way to test for galvanneal that can be done on the...
  14. Ductmate

    Respirators vs. dust collector

    In our water-based sealant production, 50lb bags of Talc are added to our mixer. We currently have a dust collector ducted into the lid of the mixer. When the bags are emptied into the mixer, the mix tank is under slight negative pressure, so any dust is sucked into the tank. We also have a...
  15. Ductmate

    compressed air flow calculation

    Thanks to everyone for their help on this. This has given me the info I need. Vince
  16. Ductmate

    compressed air flow calculation

    David, Thanks for the quick response. The tube is 24 inches long, not 24 feet. Can't measure 5' downstream from the reservoir, it doesn't exist! where can i find the AGA equations? I don't need an exact number, just something within +/- 2cfm. Vince
  17. Ductmate

    compressed air flow calculation

    I'm looking for an equation to figure what the flow rate of compressed air (in CFM) would be through a seamless tube of diameter 0.180", 24" long, at 100psi. One end is open to the atmosphere. I looked through my old engineering books, but it's been a long time since I've done flow stuff...
  18. Ductmate

    zinc castings in pool area?

    I have a zinc die cast product made of alloy #7. If this was used in an indoor swimming pool area, would the chlorine have any detrimental effect on the zinc. Thanks, Vince
  19. Ductmate

    casting iron with thermite

    I'm working on a project that involves making a casting of a prototype of a beam clamp. I have some machinable casting material, but that won't make a prototype I can test. I don't have access to a forge or foundry, but I can make Thermite. Does anyone have any techniques or ideas on how I...
  20. Ductmate

    Atlas Shrugged - Ayn Rand

    Fight Club - the movie or the book. Don't let the title fool you, it's not just about guys beating each other up. Addresses the problem of being 'slaves in white collars.' Cat's Cradle by Kurt Vonnegut, humorous look at the implications of a triumph of chemistry that basically destroyed the...

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