Tips needed - Foam cutting - wheel wells    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 >> Pattern Universe - RC Pattern Flying >> Classic RC Pattern Flying >> Tips needed - Foam cutting - wheel wells
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
Tips needed - Foam cutting - wheel wells - 9/27/2011 9:01 PM   
AllTheGoodNamesAreTaken



Posts: 1528
Score: 118
Joined: 8/31/2002
Last Login: 5/23/2013
From: Stokesdale, NC, USA
Status: offline 		I can never seem to get nice round perpendicular holes cut in the foam for wheel wells. I end up with gaps between the balsa wells and the foam. I know it's hidden after sheeting, but I'm hoping someone can share a tip or two.

Thanks!

_____________________________

Don''t just stand there, go get some glue!

Hide Signatures
       Post #: 1

RE: Tips needed - Foam cutting - wheel wells - 9/27/2011 9:23 PM   
nonstoprc



Posts: 2337
Score: 110
Joined: 9/9/2003
Last Login: 5/24/2013
From: Central, TX, USA
Status: offline 		Hi Jeff,

The trick is to cut the wheel well in the foam before sheeting. Two identical template plates for the well and the channel to the fuse for retract linkage are placed at exactly same location at top and the bottom of the core. Then the cutout is made following the curves/lines on the template.

Hope this helps.

_____________________________

Where facts are few, experts are many.
Perfection is God''''s business.

Hide Signatures

(in reply to AllTheGoodNamesAreTaken)
       Post #: 2

RE: Tips needed - Foam cutting - wheel wells - 9/27/2011 10:40 PM   
AllTheGoodNamesAreTaken



Posts: 1528
Score: 118
Joined: 8/31/2002
Last Login: 5/23/2013
From: Stokesdale, NC, USA
Status: offline 		I cut my wells before sheeting. The top/bottom template is an obvious oversite.... Thanks!

_____________________________

Don''t just stand there, go get some glue!

Hide Signatures

(in reply to nonstoprc)
       Post #: 3

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 1:12 AM   
EscapeFlyer



Posts: 2293
Score: 120
Joined: 8/7/2003
Last Login: 5/24/2013
From: Brooklyn Center, MN, USA
Status: online 		I needed this answered as well... Thanks!

Brian

_____________________________

N Central Regional Director
Classic Pattern Association

Hide Signatures

(in reply to AllTheGoodNamesAreTaken)
       Post #: 4

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 1:28 AM   
speedracerntrixie


 

Posts: 2383
Score: 189
Joined: 6/7/2010
Last Login: 5/24/2013
From: San Jose, CA, USA
Status: online 		I cut the wheel well with a hole saw before the wings are sheeted then line the wheel well with 1/16 balsa. I insert a foam rubber donut in the wheel well to hold the balsa in place while glue drys.


Hide Signatures

(in reply to EscapeFlyer)
       Post #: 5

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 1:48 AM   
dave pattern


 

Posts: 79
Score: 100
Joined: 1/20/2010
Last Login: 2/25/2013
From: Orangevale, CA, USA
Status: offline 		the donut is a good idea!
Hmmm. what if i use an actual donut ?
then i could eat it after i was done.
i always cut the hole after sheeting but i think i will try the before idea it sounds like it might work better
Dave.


Hide Signatures

(in reply to speedracerntrixie)
       Post #: 6

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 1:55 AM   
Live Wire


 

Posts: 5887
Score: 6329
Joined: 11/20/2002
Last Login: 5/24/2013
From: Sterling , CO, USA
Status: offline 		A soldering gun and 1/32 piano wire looped from one side of the iron to the other. just watch the heat with the triger.
I use furnace tape on the edges of my templates to keep from burning soft templates.

_____________________________

Larry K AMA 36417
Sig Kadet Brotherhood # 4 WACO Brotherhood #34 Cub Brotherhood 14

Hide Signatures

(in reply to speedracerntrixie)
       Post #: 7

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 2:04 AM   
FLAPSDOWN


 

Posts: 69
Score: 100
Joined: 11/10/2004
Last Login: 5/18/2013
From: Naperville, IL, USA
Status: offline 		Possibly you could share with the class the method you're currently using. Hole saws do a really good job making round holes.

Hide Signatures

(in reply to Live Wire)
       Post #: 8

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 2:13 AM   
Live Wire


 

Posts: 5887
Score: 6329
Joined: 11/20/2002
Last Login: 5/24/2013
From: Sterling , CO, USA
Status: offline 		The soldering gun is the best foam tool you can have when building a foam wing or just shapeing. You form the wire to what you want to cut, from wheel wells to servo extention channels and spar slots. When cutting wheel wells, place the wire close but not touching for fine cuts. You can make them as long as you need but do not force the cut. Takes a little practice.
Larry K

The only thing I do not like about the saw is they make such a mess

_____________________________

Larry K AMA 36417
Sig Kadet Brotherhood # 4 WACO Brotherhood #34 Cub Brotherhood 14

Hide Signatures

(in reply to FLAPSDOWN)
       Post #: 9

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 2:54 AM   
doxilia



Posts: 4523
Score: 136
Joined: 4/21/2008
Last Login: 5/23/2013
From: Montreal, QC, CANADA
Status: offline 		One of the techniques I learned (here, probably) that "cleans" the wells up nicely is that if you slightly undercut your wells with the gun, even if your gun handling or template is not quite up to snuff, you can then sand the wells clean with a paint can cap and some 220 grit sandpaper wrapped around it. Not only does it sand things round and smooth but it also can sand the base of the well with some sandpaper glued to the base of the cap (use the self adhesive paper for this).

But it is certainly an acquired art. I'm still working on getting them just peachy!

David.

Hide Signatures

(in reply to Live Wire)
       Post #: 10

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 3:51 AM   
Live Wire


 

Posts: 5887
Score: 6329
Joined: 11/20/2002
Last Login: 5/24/2013
From: Sterling , CO, USA
Status: offline 		Find a can the size of your wheel , cut off the rim and make yourself a hole saw.

_____________________________

Larry K AMA 36417
Sig Kadet Brotherhood # 4 WACO Brotherhood #34 Cub Brotherhood 14

Hide Signatures

(in reply to doxilia)
       Post #: 11

RE: Tips needed - Foam cutting - wheel wells - 9/28/2011 4:28 AM   
MTK



Posts: 4001
Score: 203
Joined: 5/14/2004
Last Login: 5/23/2013
From: Whippany, NJ, USA
Status: offline
quote:

ORIGINAL: speedracerntrixie

I cut the wheel well with a hole saw before the wings are sheeted then line the wheel well with 1/16 balsa. I insert a foam rubber donut in the wheel well to hold the balsa in place while glue drys.


This is one good way I used as well back in the day of classic builds. I've built the saw from various things, like cans, even schedule 10 pvc pipe. I even lined the foam with foam coffee cups in lieu of balsa. Worked well

Last time I built a retract model about 10 years ago, I tried something a little different. ACP sells a nifty little tool called "Hot Hand" or something like that. It's a 5" long piece of stailess tubing about 1mm in diameter, on a handle with power leads. Connected to a 12 V 1 amp power source such as some transformers one may have lying around, this thing is excellent for carving foam.

Anyway, I cut a pair of templates from card stock with the retract holes (including the strut section) located where I wanted. Cutting perfect circles in the card stock was simple....fashioned a simple hole cutting tool using an Xacto blade, a popsickle stick and a push-pin. Both templates cut together to assure precision. One template taped on top of the foam wing the other taped to the bottom, lining up LEs TEs and root chords. The Hot Hand tool cut the holes perfectly. The same templates used on both wing panels.

FWIW2U


_____________________________

Regards,
MattK

Hide Signatures

(in reply to speedracerntrixie)
       Post #: 12

Page:   [1]
All Forums >> RC Airplanes >> Pattern Universe - RC Pattern Flying >> Classic RC Pattern Flying >> Tips needed - Foam cutting - wheel wells
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


0.641RCU1