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First attempt at bench running elliptical moulding

Discussion in 'Fibrous Plastering Discussions' started by Cisco, Jun 26, 2017.

  1. Cisco

    Cisco New Member

    Thanks to the info on this site and a few others ;) I made my first attempt @ bench running some elliptical moldings.

    Cheers
     

    Attached Files:

    • Like Like x 3
  2. Oxford

    Oxford New Member

    That looks really smart mate, are you self learning, or at college?
     
  3. flynnyman

    flynnyman Private Member

    Nice work :)
     
  4. Djr

    Djr Active Member

    Yes nice work pal(y)
     
  5. Davy sned

    Davy sned Active Member

    Tidy looking piece of work keep the pics coming:numberone:
     
  6. Cisco

    Cisco New Member

    Thanks for the comments!

    Basically self taught. No college or training ,went to work when I was young after leaving school. Been installing interior stone for the past 3 decades so I have experience in figuring s**t out and have been on jobs were guys were installing fibrous plaster and running in situ, thought I would give it a go.

    Cheers
     
  7. Oxford

    Oxford New Member

    You should be really proud of that as a first attempt. I have been teaching my self bits of insitu running, I'm really enjoying it! Are you going to do any other decrative pieces?
     
  8. choppa

    choppa Active Member

    Lovely bit of work
     
  9. Nicm

    Nicm Well-Known Member

    Good work,full respect,
     
  10. Danny

    Danny TPF OWNER

    Thats tidy :D (not that I know anything about fibrous) :D
     
  11. puddove

    puddove Private Member

    keep up the good work ; bang tidy(y)
     
  12. Cisco

    Cisco New Member

    A few progression shots. Finished moulding, keystone and mold, and my little helper

    Cheers
     

    Attached Files:

    • Like Like x 4
  13. mikeadams1985

    mikeadams1985 Private Member

    looks good fella,
    but defiantly the long way round,
    ellipse can be run quickly, easily and to a perfect ellipse using a trammel.
     
    • Like Like x 1
  14. Cisco

    Cisco New Member

    Unfortunately a trammel will not work for this application, I can mark a perfect ellipse with the trammel but I could not use it to run moulding as the major and minor axis have an extreme offset. The major axis is over 180cm and the minor axis is about 19cm. Because the trammel uses pivot points sliding through a preset tracks and not true radius running the knife noticeably would drag through the run skewed once it is off the major and minor axis center points. I attached a cad screenshot to visually explain it, not sure if I am explaining it good enough. In the screenshot you can see the three colored points the knife would run using a trammel. The yellow indicates major axis center pint where the moulding is 107.95mm wide, at the cyan colored line point the knife is running skewed and the moulding is now @ about 101.6mm, at the green colored line point the moulding is now @ about 92mm, as you continue through the run the knife would correct itself When parallel to the major axis. The white lines are the radius angles the knife should be at.

    Cheers
     

    Attached Files:

    Last edited: Jul 16, 2017
  15. zombie

    zombie Private Member


    Well foook me thats me confused sounds like NASA putting a man on the moon to me!!!
     
    • Agree Agree x 2
    • Funny Funny x 2
  16. Dropsalot

    Dropsalot Private Member

    Blimey!
    Nice bit of work there.
     
  17. Danny

    Danny TPF OWNER

    yup with you on that
     
    • Funny Funny x 2
  18. Cisco

    Cisco New Member

    Sorry guys, it wasn't my intent to confuse, just wanted to point out some of the limitations of using a trammel with an oblong ellipse. I try it again with a less confusing drawing.

    Cheers
     

    Attached Files:

  19. Danny

    Danny TPF OWNER

    Hahaha I think it is a case of not having any idea about it at all :D (thats me especially)
     

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