PaperModelers.com

Go Back   PaperModelers.com > Card Models > Model Builds > Aviation

Reply
 
Thread Tools Display Modes
  #21  
Old 05-01-2019, 01:50 PM
Isaac's Avatar
Isaac Isaac is offline
Member
 
Join Date: Oct 2010
Location: Florida
Posts: 8,810
Total Downloaded: 679.43 MB
Thumbs up Wood plug

OK, plan B for a vacuform plug.



This time, I decided to make the plug out of wood.


I started with a 2" diameter wood dowel from a local hardware store.
Yak-25M ( twin engine jet ) GPM #546-img_9291.jpg

start turning on my mini lathe
Yak-25M ( twin engine jet ) GPM #546-img_9293.jpgYak-25M ( twin engine jet ) GPM #546-img_9294.jpgYak-25M ( twin engine jet ) GPM #546-img_9297.jpg

and the finished plug.
Yak-25M ( twin engine jet ) GPM #546-img_9299.jpgYak-25M ( twin engine jet ) GPM #546-img_9300.jpg


trial fit, great !!!!!!
Yak-25M ( twin engine jet ) GPM #546-img_9301.jpgYak-25M ( twin engine jet ) GPM #546-img_9302.jpg


Next stop is to vacuform the nose.



Isaac
__________________
My gallery [http://www.papermodelers.com/gallery...v-r-6&cat=500]
Recent buildsMeteor F1, Meteor F8, Mig-Ye8, NA Sabre, A-4E Skyhawk,Mig-15 red, Mig-17 repaint
Reply With Quote
  #22  
Old 05-01-2019, 10:27 PM
YOAVHOZMI YOAVHOZMI is offline
Member
 
Join Date: Jun 2013
Location: kiryat yam
Posts: 4,326
Total Downloaded: 5.90 MB
good work with the wood...it looks very good.

YOAV
Reply With Quote
  #23  
Old 05-02-2019, 03:58 AM
Abir Merlin Abir Merlin is offline
Member
 
Join Date: Jan 2009
Posts: 224
Total Downloaded: 64.98 MB
Issac so meny skills , it's looking good.
Reply With Quote
  #24  
Old 05-02-2019, 06:58 AM
ricleite ricleite is offline
Member
 
Join Date: Jun 2009
Posts: 1,526
Total Downloaded: 0
Definitely smoother than paper! I bet that this model will not require nose ballast
Reply With Quote
  #25  
Old 05-02-2019, 02:40 PM
Isaac's Avatar
Isaac Isaac is offline
Member
 
Join Date: Oct 2010
Location: Florida
Posts: 8,810
Total Downloaded: 679.43 MB
Exclamation

Quote:
Originally Posted by ricleite View Post
Definitely smoother than paper! I bet that this model will not require nose ballast
I will not use the wood nose for this kit. It will be a plug and I will vacuform a nose out of PETG plastic .


As for ballast, this airplane has what is called a bicycle landing gear in the fuselage ( front of the CG, and back of the CG ), so for a model it makes no difference as to the ballast. Just some trivia.


Isaac
__________________
My gallery [http://www.papermodelers.com/gallery...v-r-6&cat=500]
Recent buildsMeteor F1, Meteor F8, Mig-Ye8, NA Sabre, A-4E Skyhawk,Mig-15 red, Mig-17 repaint
Reply With Quote
Google Adsense
  #26  
Old 05-02-2019, 03:35 PM
Butelczynski's Avatar
Butelczynski Butelczynski is offline
Member
 
Join Date: Jun 2017
Location: Brampton ,Ontario
Posts: 3,151
Total Downloaded: 322.93 MB
My biggest problem with petalike that are edges of paper I can't touch up with pencil.Those white edges always show up no matter how I try to color them.

If you can get around it with vacu formed nose go for it.I'm sure it will be better.
Reply With Quote
  #27  
Old 05-02-2019, 03:40 PM
Isaac's Avatar
Isaac Isaac is offline
Member
 
Join Date: Oct 2010
Location: Florida
Posts: 8,810
Total Downloaded: 679.43 MB
Thumbs up

Quote:
Originally Posted by Butelczynski View Post
My biggest problem with petalike that are edges of paper I can't touch up with pencil.Those white edges always show up no matter how I try to color them.

If you can get around it with vacu formed nose go for it.I'm sure it will be better.
Here it comes! My vacuformed nose in the next post.


Isaac
__________________
My gallery [http://www.papermodelers.com/gallery...v-r-6&cat=500]
Recent buildsMeteor F1, Meteor F8, Mig-Ye8, NA Sabre, A-4E Skyhawk,Mig-15 red, Mig-17 repaint
Reply With Quote
  #28  
Old 05-02-2019, 03:55 PM
Isaac's Avatar
Isaac Isaac is offline
Member
 
Join Date: Oct 2010
Location: Florida
Posts: 8,810
Total Downloaded: 679.43 MB
Smile Vacuformed nose section

Now that the wood plug is ready, lets vacuform it.


I had lots of PETG plastic sheets of 0.030 inches thick, so I decided to give it a try. It took me 3 tries to get it right.

The main difference to success is to limit the oven time at 350 degrees F to 45 seconds.
Yak-25M ( twin engine jet ) GPM #546-img_9304.jpg

Also, I modified the plug slightly to allow for its easy removal from the plastic. I added a screw to the back so I can rock the plug a bit from side to side and then pull it out. Also, I added a little material using tape so the plastic still has a positive extraction shape.
Yak-25M ( twin engine jet ) GPM #546-img_9310.jpgYak-25M ( twin engine jet ) GPM #546-img_9312.jpgYak-25M ( twin engine jet ) GPM #546-img_9313.jpg


Here is the finished nose
Yak-25M ( twin engine jet ) GPM #546-img_9309.jpgYak-25M ( twin engine jet ) GPM #546-img_9314.jpg


and initial fit to the test paper section going aft. Looks OK.
Yak-25M ( twin engine jet ) GPM #546-img_9323.jpg


Now, I decided to paint the nose dark grey ( note : The exact match to the paper is not critical since the real aircraft had this nose separate from the fuselage and some operational aircraft may have even had different shades of grey as well ).
Yak-25M ( twin engine jet ) GPM #546-img_9338.jpg
Yak-25M ( twin engine jet ) GPM #546-img_9340.jpgYak-25M ( twin engine jet ) GPM #546-img_9341.jpgYak-25M ( twin engine jet ) GPM #546-img_9342.jpg


fit again
Yak-25M ( twin engine jet ) GPM #546-img_9343.jpg



I then sprayed the plastic dome with Pledge floor polish which seals in the paint and gives it a bit of a shine. Came out good.
Yak-25M ( twin engine jet ) GPM #546-img_9347.jpgYak-25M ( twin engine jet ) GPM #546-img_9349.jpg


Now it is installed ( will need small touch up due to the very tight fit where the paint got scuffed up ).
Yak-25M ( twin engine jet ) GPM #546-img_9351.jpg

I like it.



Isaac
__________________
My gallery [http://www.papermodelers.com/gallery...v-r-6&cat=500]
Recent buildsMeteor F1, Meteor F8, Mig-Ye8, NA Sabre, A-4E Skyhawk,Mig-15 red, Mig-17 repaint
Reply With Quote
  #29  
Old 05-02-2019, 04:53 PM
MacSongLi's Avatar
MacSongLi MacSongLi is offline
Member
 
Join Date: May 2012
Location: Ontario, Canada
Posts: 5,977
Total Downloaded: 912.66 MB
Very nice work Isaac, it definitely looks better than the petals. That lathe sure comes in handy.


Gary
__________________
"Fast is fine, but accuracy is everything" - Wyatt Earp

Design Group Alpha
https://ecardmodels.com/vendors/design-group-alpha
Reply With Quote
  #30  
Old 05-03-2019, 01:29 AM
Boris Boris is offline
Member
 
Join Date: Jun 2014
Location: Kfar Vradim, Galilee
Posts: 248
Total Downloaded: 948.05 MB
That is a very beautiful piece of work!
Did you use a vacuum box or just pulled over the PETG sheet?
Reply With Quote
Google Adsense
Reply

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 02:52 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