Which material to use for plug    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> Composites Fabrication And Repair >> Which material to use for plug
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
Which material to use for plug - 6/30/2004 8:09 AM   
HORNETONE


 

Posts: 49
Score: 100
Joined: 12/17/2001
Last Login: 12/2/2012
From: Youngstown, OH, USA
Status: offline 		Hi everyone ........

I'm planning to build a plug for one my own designed jet ,would like to know which isthe best material to construct the plug . As I've some experience with each of the listed materials below but would rather get more opinions in order to keep the plug lasts for a long time and may be producing several molds without getting damage :

1) high density blue foam

2) Minicell high density foam ( use to make cayak and surfing board )

3) ..... Or should I just stick with regular balsa & plywood method to build up the fuse and then filled up inside with plaster to get the high level of strength
( by doing this ,will the plaster creates lots of heat and distord the shape ) .

Money and time consuming are not an issue to me as long as I could get some high quality parts .

Any inputs will be welcome and greatly apreciated ,
Sonny !

Hide Signatures
       Post #: 1

RE: Which material to use for plug - 6/30/2004 10:13 AM   
buttuh


 

Posts: 127
Score: 100
Joined: 2/11/2003
Last Login: 6/7/2005
From: Irvine, CA, USA
Status: offline 		I'd cut out planks using wood to get your basic hull. Fill the rest with pour foam and sand everything down smooth. Seal and primer the whole thing with high build polyester primer, sand and polish to a shine and you get your plug. Good luck.

Evan

Hide Signatures

(in reply to HORNETONE)
       Post #: 2

RE: Which material to use for plug - 6/30/2004 4:26 PM   
Mike James



Posts: 2556
Score: 105
Joined: 1/19/2002
Last Login: 6/17/2013
From: Anchorage, AK, USA
Status: offline 		You can use anything you want, as a "core", as mentioned above. Where the strength (related to pulling parts from a mold) comes in is at the surface.

So, just be careful with your dimensioning, and make sure that you start adding the hard material when the dimensions are all "low". You don't want to build a nice plug, then screw up the dimensions by adding to much "stuff" on the outside.

Today, I like the method of building a traditional former/stringer or former/keel structure, then filling it with expandable polyerethane foam. and finally glassing over that. If you use foam, it's a good idea to mix a slurry of epoxy/microballoons or something similar, to seal the foam first, sand it a little, then glass it. (Stole this idea from Darrin Cash)

More on my site, at http://www.nextcraft.com/rcdesignandbuilding.html

Be sure and let us see your progress here. We all love watching other people build, on this forum.


_____________________________

Mike James
RC Design and Building - www.nextcraft.com

Hide Signatures

(in reply to buttuh)
       Post #: 3

Page:   [1]
All Forums >> RC Airplanes >> Composites Fabrication And Repair >> Which material to use for plug
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.234RCU1