PaperModelers.com

Go Back   PaperModelers.com > Card Models > Tips and Tricks

Reply
 
Thread Tools Display Modes
  #1  
Old 06-30-2018, 06:33 AM
SCEtoAUX's Avatar
SCEtoAUX SCEtoAUX is offline
Member
 
Join Date: Jul 2007
Location: USA
Posts: 7,801
Total Downloaded: 567.16 MB
Cutout areas on built sub-assemblies

Some models have areas, sometimes spanning numerous parts, that need to be cut out after the parts are combined to form one sub-assembly.

What I do is to cut small slits in strategic areas of the cutout with the part(s) still on the page. The various parts are then attached to each other to form the sub-assembly. This allows the tip of the hobby knife to be inserted in the pre-cut slits and the blade is then carefully moved along the cutout boundary to remove the area that needs to be cut out.

In the past I have assembled the parts without pre-cutting the slits. It was a struggle to insert the blade into the area to be cut out without mangling the piece.

Anywho, that is how I do it. Does anyone else have a tip on making those cutouts?
__________________
~Doug~
AC010505 EAMUS CATULI! Audere est Facere THFC 19**-20** R.I.P. it up, Tear it up, Have a Ball
Reply With Quote
Google Adsense
  #2  
Old 06-30-2018, 06:46 AM
Lex's Avatar
Lex Lex is offline
Member
 
Join Date: Aug 2007
Location: London, Britannia
Posts: 1,691
Total Downloaded: 70.75 MB
Send a message via MSN to Lex
I have yet to encounter such a design. Any reason they can't be cut before assembly?
__________________
"The world is big"
On hold: Fuyuzuki, Zao, Zara, Akizuki,
Past works: XP55 Ascender, CA Ibuki, Seafang F32, IS-3, Spitfire V, J-20
Reply With Quote
  #3  
Old 06-30-2018, 06:49 AM
rickstef's Avatar
rickstef rickstef is offline
ETERNAL ADMINISTRATOR
 
Join Date: Jun 2007
Location: Lake Wales, Florida
Posts: 9,776
Total Downloaded: 683.37 MB
Send a message via Yahoo to rickstef Send a message via Skype™ to rickstef
shaping a fuselage
__________________
"Rock is Dead, Long Live Paper and Scissors"
International Paper Model Convention Blog
http://paperdakar.blogspot.com/
"The weak point of the modern car is the squidgy organic bit behind the wheel." Jeremy Clarkson, Top Gear's Race to Oslo
Reply With Quote
  #4  
Old 06-30-2018, 06:59 AM
SCEtoAUX's Avatar
SCEtoAUX SCEtoAUX is offline
Member
 
Join Date: Jul 2007
Location: USA
Posts: 7,801
Total Downloaded: 567.16 MB
From what I have encountered if the cutout area is removed prior to assembly the sub-assembly would not be able to be formed correctly. The cutout area provides support for the forming of the sub-assembly, then the cutout area is removed so the sub-assembly can be attached to another sub-assembly or the main body of the model.
__________________
~Doug~
AC010505 EAMUS CATULI! Audere est Facere THFC 19**-20** R.I.P. it up, Tear it up, Have a Ball
Reply With Quote
  #5  
Old 06-30-2018, 07:05 AM
Vinalssergio155's Avatar
Vinalssergio155 Vinalssergio155 is offline
Member
 
Join Date: Jan 2018
Location: Ezeiza.Argentina
Posts: 3,434
Total Downloaded: 331.88 MB
I do something similar to your method, at least a small cut to then introduce the blade. Another solution for certain parts is to cut the area, then on the inside return the area to be discarded after assembling fastened with low paper tape adherence, which is used by painters, this prevents the piece from deforming and then easily removes the area to be discarded. For certain parts it works, the tape does not have to cover much more than the area to be discarded, a slight pressure takes it off and If not, a sharp knife cuts it easily and the piece is not damaged.
Reply With Quote
Google Adsense
  #6  
Old 06-30-2018, 07:19 AM
airdave's Avatar
airdave airdave is offline
Member
 
Join Date: Apr 2009
Location: Ontario Canada
Posts: 14,246
Total Downloaded: 257.44 MB
There are many models where cutting something out after assembly
helps with the initial assembly by leaving strengthening material in place.
(as stated)

Or...you just forgot to cut something out and have to do it afterwards.

I have cut openings in unsupported sections of fuselages and wings with no problem.

I just sharpen a Hobby Knife blade tip to supersharp.
I keep a block covered with 2000 Emery handy on my workbench.
And I dip the knifeblade into water every time I sharpen.


Then lightly draw the knife tip over the area to be cutout.
Multiple passes...keep sharpening the blade...don't apply any extra pressure.
Don't push on the structure at all.

Within a few passes, it easily slices through the card.
I will leave corners or a few strategic spots until the very end,
then slide the knife in and slice those spots to free the part.

Sometimes you only need to make one or two slices in the surface.
Enough to get fine pointed scissors in.
__________________
SUPPORT ME PLEASE: PaperModelShop
Or, my models at ecardmodels: Dave'sCardCreations
Reply With Quote
  #7  
Old 06-30-2018, 07:22 AM
Vinalssergio155's Avatar
Vinalssergio155 Vinalssergio155 is offline
Member
 
Join Date: Jan 2018
Location: Ezeiza.Argentina
Posts: 3,434
Total Downloaded: 331.88 MB
Some photos explain better
Attached Thumbnails
Cutout areas on built sub-assemblies-20180630_101138.jpg   Cutout areas on built sub-assemblies-20180630_101354.jpg   Cutout areas on built sub-assemblies-20180630_101436.jpg   Cutout areas on built sub-assemblies-20180630_101457.jpg   Cutout areas on built sub-assemblies-20180630_101534.jpg  

Cutout areas on built sub-assemblies-20180630_101606.jpg  
Reply With Quote
  #8  
Old 07-01-2018, 06:48 AM
bpgeygolpher's Avatar
bpgeygolpher bpgeygolpher is offline
Member
 
Join Date: Feb 2012
Location: Southport, North Carolina
Posts: 189
Total Downloaded: 1.23 GB
Great idea Doug.

I never thought of doing that. Thanks for passing it on.

Paul
__________________
Paul
Reply With Quote
  #9  
Old 07-01-2018, 03:15 PM
Kevin WS's Avatar
Kevin WS Kevin WS is offline
Eternal Member
 
Join Date: Aug 2010
Location: Currently Southern Africa.
Posts: 7,121
Total Downloaded: 425.92 MB
I used to use a new scalpel blade - nowadays I just resharpen a blade, taking extra care when I resharpen.

A few light stokes then to open a starting slit in the card....
__________________
The SD40 is 55 now!
Reply With Quote
Reply

Tags
areas, cutout, sub-assemblies

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 01:08 AM.


Powered by vBulletin®
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.

Parts of this site powered by vBulletin Mods & Addons from DragonByte Technologies Ltd. (Details)
Copyright © 2007-2023, PaperModelers.com