Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 14 of 20 FirstFirst ... 41213141516 ... LastLast
Results 326 to 350 of 491

  1. #326
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Thanks Steve, that F4U wing is providing some serious motivation over here.
    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  2. #327
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Just a post of some roughed in clay work. Slow going, but all part of the plan I'm afraid.






    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  3. #328
    SCALECRAFT's Avatar
    Join Date
    Jan 2002
    Location
    MONTEBELLO, CA
    Posts
    2,646
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Impressive framing.

    In a few months we are going to do a composite Arado 243 EDF. When we do it, I'll post the molding methods we use. Will save you a lot of time and material on your next one if you do this again.

    Steve

  4. #329
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    That would be great Steve. I'll be looking forward to watching along for sure. To be honest, I could've wrapped this up a long time ago with a glue gun and some coroplast pillars to hold up coroplast flanges, but that wouldn't be much fun would it? ;D

    Actually, here's a story. When I moved last month, I got a new box-spring from a buddy because my last one was a sheet of 1/2 ply and some 2X4's across the bed frame. So I salvaged the desk from a junk pile, and I built what you see on top of it with bits of my bed. I moved the MDF sheet twice: both times to new cities. I've moved this P40 project 5 times now over 6 years!! lol
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Sq46003.jpg 
Views:	2 
Size:	54.8 KB 
ID:	1609446  
    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  5. #330
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Ongoing clay work...here you can see that there are still a lot of little cracks and crevices to fill - one day at a time - this stuff is worth the extra effort later on





    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  6. #331

    Join Date
    Dec 2010
    Location
    Pinckney, MI
    Posts
    363
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    WOW, wish I knew where you were going with this.

  7. #332
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Somewhere to Pry

    I will leave the clay in these pry locations when I flip it over and mould the upper flanges. This will give a nice spot to get the crows foot into when separating the finished upper and lower mould sections. I've tried to target potential problem areas while placing them around the periphery.




    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  8. #333
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    1/4"-20 Flange Bolt Thread Inserts

    Be careful not to over tighten the screws. Just pull them down flush.



    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  9. #334
    SCALECRAFT's Avatar
    Join Date
    Jan 2002
    Location
    MONTEBELLO, CA
    Posts
    2,646
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build


    [quote]ORIGINAL: Slow Low

    That would be great Steve. I'll be looking forward to watching along for sure. To be honest, I could've wrapped this up a long time ago with a glue gun and some coroplast pillars to hold up coroplast flanges, but that wouldn't be much fun would it? ;D


    For me, I have done too many for this part to be fun. For us the fun parts is getting a flying one out of it. Over and over in a very short period of time

    Steve

  10. #335
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Bring it on...if you've got clay, I've got all dang day!

    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  11. #336
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Yes folks, it was absolutely free afterall!

    I'll post a link to the iso file once I get it ripped...

    ...and here's a supplies link that looks pretty good too

    http://www.miapoxy.com/

    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  12. #337
    Dreamin Hemi's Avatar
    Join Date
    Nov 2004
    Location
    Milton, DE
    Posts
    2,639
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Looking forward to seeing this video. May have to incorporate this into my manufacturing class somehow.
    These opinions expressed here are my own and may not necessarily represent the views of RCUniverse.com

  13. #338
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    haha - ya you could use it as an example of a labour intensive process that should be moved offshore....LOL

    Every time I go to use this mould and I don't have tighten a hundred nuts and washers onto all those bolts, I'm gonna grin from ear to friggin' ear! Just set the clutch nice and loose on the driver and give those 1/4" bolts hell. These thread inserts are going to save so much time it's not even funny.




    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  14. #339
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Every time I go to use this mould and I don't have tighten a hundred nuts and washers onto all those bolts, I'm gonna grin from ear to friggin' ear! Just set the clutch nice and loose on the driver and give those 1/4" bolts hell. These thread inserts are going to save so much time it's not even funny.




    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  15. #340

    Join Date
    Dec 2010
    Location
    Pinckney, MI
    Posts
    363
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Looking great man!!!!! Like the concept, I think I know where you're going and I like it. Great time saver. Thanks for the tip on the CD, got mine too.
    My project is on hold for baseball right now. End of the high school season with plenty of rain make-ups and umpiring tournaments this weekend and next weekend. I will be watching this with great interest.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	ig13367.jpg 
Views:	4 
Size:	3.56 MB 
ID:	1611580  

  16. #341
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    These are garage door hinges. I had them laying around from a past project and won't be needing them. I thought this might be a good opportunity to try something new and hinge the two main sections of my wing mould. If it doesn't work out, I will simply remove the hinge pins. I will align their axes with the laser level to give it the best shot at working since they can't simply be mounted flat against the angled back wall.

    It's the classic risk vs reward. The question is - are yours big enough to get an angle grinder that close to 3 years work?

    I'm not finished cleaning up yet but I needed a break, so here's some pics for today.






    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  17. #342
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    These hardwood blocks were $0.50 ea at the woodshop supply store.

    Here's their website. They have lightweight ply too...

    www.workshopsupply.com

    Notice that I've set the hinge pins to level when the blocks are placed on the mould face where they will become part of the finished mould base.


    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  18. #343
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    So the hinge pins are level, at the same height, and in the same plane. Hopefully this will work because it will take what is really an awkward two person job and make joining the bulky clam sections a one handed operation. There's still some play in the end because I can shim the hinge plates on the hardwood should need be to get things finalized.



    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  19. #344
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    So this is pretty much the mould form completed and ready to cast. I will now go over everything with a fine tooth comb and make sure all the clay is finished off properly.

    Once I've laid the main lower section in the formers, they will need to be removed. The clay blocks around the top will just give me somewhere to get between the newly cast mould face and the white board. The formers are very close to the finished plug and we don't want to be trying to force something in the seam to pry the board away from the plug in order to carry on to the second mould section. (main upper) Just dig out the clay and there'll be a nice place to GENTLY pry off these white board formers.

    The recesses around the perimeter of the base will also provide a little rigidity but that's not really why I did it.

    I've also added two air ports in the wheel bays. They're held in place with clay. Just before laying up a part in the mould I will fill the hole with some clay and glass over them. Once the part has cured I'm hoping that a short blast of air in this location will free the part from the mould. It's the deepest spot in the mould, and it's a flat face at the bottom of a tightly controlled cylindrical form....we'll see....







    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  20. #345
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Almost forgot to fill the wing mounting holes...added cavities in the mould at the aileron trailing edges too. The empty cavity just outboard of the inboard hinge (hmm...clear as mud eh?) will provide a place to feed the control rods from the bellcranks during assembly.

    Oh, and a quick pic from the couch of all the pieces that I have moulds for, all duct taped together - motivation....



    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  21. #346
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Almost forgot to fill the wing mounting holes...added cavities in the mould at the aileron trailing edges too. The empty cavity just outboard of the inboard hinge (hmm...clear as mud eh?) will provide a place to feed the control rods from the bellcranks during assembly.

    Oh, and a quick pic from the couch of all the pieces that I have moulds for, all duct taped together - motivation....



    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  22. #347
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Once I have progressed to some of the heavier cloth layers in the layup of this main lower mould section, I will lay this straw conduit down on a tacky surface and continue to lay cloth up on top of it. All of the joints have been sealed with clear tape to keep the resin out. I will mould a pipe union into the end faces so that I can screw taps onto each end of the mould.

    By running hot tap water through the mould face, I hope to have a means for controlling the time/temp curve for the cure and tool cycles. I should be able to reduce the cure time to some noticeable effect with only tap water to a maximum of about 140 deg. fahrenheit or about 60 Celcius.

    To my estimation, this would represent the home hobbiest's best chance of approaching any sort of idealized tool utilization rate while maintaining a moderate capital investment.




    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*

  23. #348
    SCALECRAFT's Avatar
    Join Date
    Jan 2002
    Location
    MONTEBELLO, CA
    Posts
    2,646
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Interesting idea.

    We use a small "hot box" with space heater.

    The only concern I would have is the surface coat. Although you mentioned the surface coat material a few posts back, if voids begin to form around or near the straws, you may loose the most important part of the mold. The surface coat when pulling parts.

    And later, I have noticed for us, no one will see the mold, only the quality of the part. Fit, finish, detail, weight,durability, framing in wing.

    Steve

  24. #349
    SCALECRAFT's Avatar
    Join Date
    Jan 2002
    Location
    MONTEBELLO, CA
    Posts
    2,646
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build

    Some additional motivation. A pic of our Zero. This model is around 15 years old. I have yet to build it. Now with today's electrics, might be time to pull it out of storage.

    51"span A6M5.

    Steve
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Rp44425.jpg 
Views:	3 
Size:	99.3 KB 
ID:	1623262  

  25. #350
    Slow Low's Avatar
    Join Date
    Apr 2007
    Location
    Toronto, ON, CANADA
    Posts
    757
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: All Composite 1/7th P-40E Mould Build


    ORIGINAL: SCALECRAFT

    Interesting idea.

    The only concern I would have is the surface coat. Although you mentioned the surface coat material a few posts back, if voids begin to form around or near the straws, you may loose the most important part of the mold. The surface coat when pulling parts.


    Steve
    Hi Steve, this is really just a trial with something new. Recycling the straws was the biggest risk. There will be 2 layers of light weight woven fabric, and also a layer of surface veil over 2 coats of the silicon carbide impreg surface coat Steve.

    About no-one seeing the mould - I will see it every day, and that's the only person that matters.

    Just a note to those who would try a heavier hose or copper or pvc pipe etc. approach: I used the thin walled plastic straw for several good reasons.
    From possibility to actuality.
    http://www.zazzle.ca/two_bulldog_brand*


Page 14 of 20 FirstFirst ... 41213141516 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 12:07 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.