Go Back  RCU Forums > RC Airplanes > Tips & Techniques
Reload this Page >

Concave sanding tools?

Tips & Techniques Want to share a tip or special technique you have either in the workshop or at the flying field or race track? Post it right here!

Concave sanding tools?

Old 08-12-2020, 02:18 PM
Thread Starter
My Feedback: (1)
Join Date: Dec 2003
Location: Derby, KS
Posts: 366
Likes: 0
Received 1 Like on 1 Post
Default Concave sanding tools?

I have the multiple shape sanding tools. I want to use the 1/4" radius feature. I also have the sticky backed sandpaper, but it doesn't work very well with the tool. Any other suggestions? Is there a way to make this work I don't know about? TIA.
Old 08-13-2020, 02:17 PM
My Feedback: (9)
daveopam's Avatar
Join Date: Oct 2002
Location: ELK CITY, OK
Posts: 7,630
Received 12 Likes on 12 Posts

Carl Goldberg used to include one with their Ultimate biplane. I think I still have one I see if I can find and post a picture. It was just two pieces of flat ply and a U shaped bracket for each end you glued the flat pieces to. Then stuck the paper on. They work pretty good. Overall it ends up about 4" long and 1-1/4" square. Every kit had one, maybe someone close to you has one.

Old 08-13-2020, 07:33 PM
Join Date: Jul 2005
Location: , TN
Posts: 722
Likes: 0
Received 2 Likes on 2 Posts

I have a number of "PermaGrit" sanding tools. I think they are still made? My collection includes flat, round, V shaped, concave, and curved.
Old 08-15-2020, 04:43 PM
Join Date: Feb 2004
Location: South, GA
Posts: 219
Likes: 0
Received 3 Likes on 3 Posts

You can easily make a selection of concave sanding tools out of short lengths of PVC (or other material) pipe.
I've made a number of them using pipe of different diameters (PVC works best and is easy to cut).
Simply cut to desired length...you might want some long (like for leading edges), or short for utility work.
Next cut in half, quarters, or even thirds lengthwise..
Use sticky-back sandpaper of the grit appropriate for the task.
Bonus: If you wanted to sand a concave surface on the plane then just put the sandpaper on the outside of the piece of pipe.
The following users liked this post:
daveopam (08-17-2020)

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

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.