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    • Dave Ambrose

      Board Maintenance   03/14/2019

      The board is going offline Saturday, May 25th, from 9 AM PDT until 3 PM for a software upgrade. See posting in General.


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About Flat32

  • Rank
    MCM Friend

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  • Are You Human?
  • Scale I Build
    1/4 1/8 1/25

Profile Information

  • Location
    Federal Way, WA
  • Full Name
    Raymond Federowicz

Recent Profile Visitors

917 profile views
  1. Stock Model A frames ??

    Couldn't find PVA in sheet/film form, seems it only gets applied in a liquid form. Did find .001" FEP film though and ordered some. Silk turned out to be NOT a simple subject. Probably have to go to a fabric store so I can put my hands on the stuff.
  2. Flathead

    Sidetracked by Landman.
  3. I agree with 1931 for me too. More purely form following function with a smattering of mechanical styling. I favor exposed radiators surrounded by plated or polished metal shells.
  4. Stock Model A frames ??

    The problem I see with the prepreg composite materials is cutting it. Glass and carbon fiber can't be effectively cut with a razor blade. All things considered for making composite frame rails in a semi-closed mold I'm thinking maybe substituting a silk fabric impregnated with resin and roll sandwiched between PVA film. This laminated concoction would get pushed into the lower form die with the top form punch and trimmed with a razor at the top of the form die before the resin cures. While silk wouldn't have the strength of carbon or glass it should be strong enough for the purpose. I don't think I want to do composite bodies, too difficult for me.
  5. Stock Model A frames ??

    Found unidirectional prepreg and the sheet is only .006" thick, perfect. Cures with 270 degree F heat and the supplier has mold casting resin for the purpose. Got three planets lined up and only need one more named learning curve. I'll order some of the prepreg and do a quick finish on my frame rails file. Then print mold master patterns from which I'll make hydrocal plaster molds. Just don't like messing with casting resin if I don't have to. If this process proves successful I can imagine it being used to make the old car bodies in thicknesses much closer to scale sheetmetal than resin cast or injection molded body parts. Would use open molds, woven prepreg and vacuum bagging method in this instance. Finding it all here: Carbon fiber source
  6. Stock Model A frames ??

    The need for these frames, 1932, Model A and Model T, for the construction of scale model Hot Rods is very apparent to me. Producing them starts with computer files. 3D printed versions can be adequate, but scale compromises have to be made, mostly for wall thickness. The actual frames were somewhat flexible and could twist easily as part of their original design. In the 1:1 Hot Rod world they usually got boxed in some way. Getting to brass rails the way I envision them will require steel tooling which I would do with CNC. That takes tool design work and I think I can do it so that the tool parts can be wire EDM cut with the forming contours electrode EDM cut. Just takes time and money. A shortcut might be simply 3D printing molds and finding a way to utilize carbon fiber pre-preg as the material. The pre-preg would be linear strands only to facilitate loading it in what will be a closed mold open only at the ends. Need to do a little research here as I don't remember how the pre-preg gets activated and cured.
  7. Stock Model A frames ??

    I have plans to make a computer model of a bone stock 1932 frame. Have some blueprint references, but will need actual measurements for the K member and the front and rear cross members. The file is started and when finished will allow me to 3D print them in any scale. However, 3D resin is not as structurally sound as styrene so eventually I'll attempt to do the frame rails in brass with dies for 1:25 scale. Would be like American Stamping rails, but in 1:25.
  8. Mom

    To my Mom I have to say you are the most important person in my life.
  9. It's official,we're old!

    The guy in the mirror isn't you, he parts his hair on the other side, if he has any.
  10. The tool "makers" and anyone directly associated with the actual tool building make the distinction while the folks that don't get their hands "dirty" touching the tools tend to just call it all tooling. From a toolmaker's perspective the rest of the world consists of a sub species that "he" "might" label as "lay people". I'm a tool and die/mold maker.
  11. Autocar A64B

    Beautiful series of reference photos with a trained eye for important details. Looks like the weathering was also considered.
  12. The Motor Museum In Miniature

    Thanks for that link. I clicked on The special interest displays tab and got to the Engine display subject I was looking for.
  13. Resistance Soldering Questions

    Uh, it's more like science meets mad modeler. Carbon may work better because it has lower resistance than the brass you're soldering while the welding rod has higher resistance. Then again who knows without trying. Another thing to consider is the flux just might want to cause solder to stick to the stainless welding rod somewhat.
  14. Resistance Soldering Questions

    Seems the probes are carbon, so solder doesn't stick I assume. Check out Micro-Mark link. https://www.micromark.com/Resistance-Soldering-Unit?gclid=Cj0KCQjw5J_mBRDVARIsAGqGLZDMeBonlQuHT6LN-wAIeQgItui89czMPXh4W-xCWJXlIjSIDp5WyOMaAjMDEALw_wcB
  15. B.R.B.O. cruiseliner daycab

    Dirt gives it soul, the Lord's touch replicated.