It is currently Wed Jan 19, 2022 5:41 am

All times are UTC


THE PROP DEN is primarily a Darth Vader Prop Discussion Board, but we also deal with other Star Wars Props as well as Prop Replicas from other movies. If you do not yet have an account, set one up, sign in and jump into the Vader Prop Discussions!


Post new topic Reply to topic  [ 5 posts ] 
Author Enter your Message here
 Post subject: Sanding techniques/advice?
PostPosted: Mon Aug 29, 2011 1:13 am 
User avatar

Joined: Sat Jun 04, 2011 2:18 am
Posts: 27
I have what may seem a dumb question. I am fabricating the chest armor and shin guards currently out of Sintra. I am using PC7 and PC11 to fill in and contour the spaces where the raised parts of the armor (the parts which will eventually be gloss black) meet the body of the construction (gunmetal). While sanding the PC7 and PC11 I have noticed that, despite trying to keep the application of it even, there seems to be rough spots and bumps up and down where I applied it. Sanding with a few different grains has only produced so-so results. Does anyone have a sure-fire method of sanding that will help me to achieve a more-uniform appearance?
I will try to get pics up soon.
Regards,


Justin


Top
 Profile E-mail  
 
 Post subject: Re: Sanding techniques/advice?
PostPosted: Mon Aug 29, 2011 5:06 am 
User avatar

Joined: Thu Dec 21, 2006 10:46 pm
Posts: 5241
Location: San Jose, CA
Justin,

Can you post pictures and explain what grit levels of sandpaper and tools you're using?


Top
 Profile  
 
 Post subject: Re: Sanding techniques/advice?
PostPosted: Tue Aug 30, 2011 1:17 am 
User avatar

Joined: Sat Jun 04, 2011 2:18 am
Posts: 27
Mac,

Here are some pics of what I've got so far:



Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image


I tried to get some chest armor pics with natural light and indoor light, with and without flash.
I forgot to mention- I experimetned with some Bondo, particularly on the center portion of the chest, but so far I'm not thrilled with Bondo's performance.
Thus far I have been using 60 grit to rough out the epoxy, 220 to touch up, and 400 for some polish/refinement work. I've also used the Dremel with 2 small-sized sanding wheel with what I think is roughly 100 grit.
There's a base coat of autobody primer on now, just to help accentuate the defects.

The pics actually disguise some of the bumps and irregularities in the seam between the raised stripes and the base.
Let me know what you think.

Regards,
Justin


Top
 Profile E-mail  
 
 Post subject: Re: Sanding techniques/advice?
PostPosted: Wed Aug 31, 2011 2:47 am 
User avatar

Joined: Thu Dec 21, 2006 10:46 pm
Posts: 5241
Location: San Jose, CA
I hope you weren't using PC7 and PC11 based on my "Goldie" buildup from a long time ago, as those weren't really my favorite products. But that's quite impressive for a first effort. I'm kinda wondering if you could have used Sintra all the way, and the PC products are possibly unnecessary.

Your'e using the right sandpapers, so here is one of my sanding secrets.

Get a good solid eraser, wrap the 60/80 grit sandpaper around it, and *wetsand* in circles. Once your initial shaping is to satisfaction, then go to 200, then 400.

The trick of wetsanding is creating a little slurry that then does the work for you. That may mean you have to wash the gunk out of the sandpaper now and then so that the sandpaper has more bite. You'll probably go through a lot so have some sheets handy.


Top
 Profile  
 
 Post subject: Re: Sanding techniques/advice?
PostPosted: Thu Sep 01, 2011 2:55 am 
User avatar

Joined: Sat Jun 04, 2011 2:18 am
Posts: 27
Mac-

Thanks for the tips- so far, so good. I see what you mean, though, about eschewing the fill altogether and simply sanding the Sintra and shaping it via that method alone.
I'll get some more pics up when I have a chance to further implement your advice.

Regards,
Justin


Top
 Profile E-mail  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
Blue Moon by Trent © 2007
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Hosted by Freeforum.ca, get your free forum now! TOS | Support Forums | Report a violation
buy web visitors
MultiForums powered by echoPHP phpBB MultiForums