3D Printing Post your electric plane related 3D ideas and plans.

LW-PLA and paint

Old 10-20-2021, 09:14 AM
Super Contributor
Thread Starter
solentlife's Avatar
Join Date: Oct 2010
Location: Ex UK Brit now in Latvia west coast - Ventspils
Posts: 12,887
Default LW-PLA and paint

I've been sprayiong PLA and LW-PLA with spray cans and usually no problems ... I keep can at distance to reduce the level of propellant that hits the item.

Yesterday I decided to use Acrylic Metallic Silver for a Vampire in LW-PLA ..... the PLA within minutes had softened and warped ........ overnight a few splits had appeared where layers separated and edges turned.

I have never seen this before.

I have used both normal spray Acrylic and Enamel without trouble. I can only assume a combo of the metallic and propellant caused this.
solentlife is offline  
Old 01-04-2022, 05:18 PM
Super Contributor
quorneng's Avatar
Join Date: Jul 2008
Location: Cheshire, UK
Posts: 2,105

The foaming agent in LW-PLA makes for a thin skin which in turn means any degradation caused by the paint will be more significant.
In addition I think you will find 'metallic' finishes use more solvent in the mix to ensure the particles in the paint have time to 'settle' to give the required finish. The solvent is just as likely to attack a plastic as the propellent.
quorneng is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
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

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

Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.

Page generated in 0.07836 seconds with 14 queries