Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Construction Tips Construction techniques and tips

Clear coat anodized aluminum panel?
Clear coat anodized aluminum panel?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 4th November 2017, 01:18 AM   #1
MadInventor is offline MadInventor  United States
diyAudio Member
 
Join Date: Jun 2015
Location: Iowa
Default Clear coat anodized aluminum panel?

Does anyone clear coat their anodized aluminum panel with lettering/print on them? If so, what do you use?

Thanks,
MI
__________________
Smoke........ahhh...crap!
  Reply With Quote
Old 6th November 2017, 07:10 PM   #2
russc is offline russc  England
diyAudio Member
 
Join Date: Mar 2011
Location: W Yorkshire
Strange how some questions don't get an answer while others ramble on & on.

No personal experience here but lacquer aerosol from an auto shop should be ok.
Try an offcut of panel or even the back face to test before committing to the face on view.

Maybe everyone here has their panels engraved?
  Reply With Quote
Old 6th November 2017, 09:58 PM   #3
Ultima Thule is offline Ultima Thule  Europe
diyAudio Member
 
Ultima Thule's Avatar
 
Join Date: Jan 2004
Location: PKS, Finland
Label letters, aka. letter stickers etc., can be bought from just anywhere, you just need a steady hand and accurate eyes to get them in a nice line and spacing.

For the clear coat there's a special 2-component available in special spray bottles which comes outfitted with an extra internal chamber containing the hardener which is manually activated through a valve at the bottom of the bottle (see attached picture), when activated the two components starts to mix and cure so the pot life is max 48 hours in ambient temp(!!), the 2-component provides for a much tougher and durable surface.

Another advantage buying better quality spray bottle is, they usually come with a special shaped spray nozzle which provides for a much better spray pattern (similar to a real spray gun) and handling (see attached picture).

A good advice is to warm up the spray bottle gently up to ca 35-40 degrees Celsius, the solvents will atomize much better providing for a much better spray fume and result, if the bottle is too cold the tiny droplets are much larger and can even sputter with worse result.

2K Clear coat - SprayMax
Amazon.com: USC Spray Max 2k High Gloss Clearcoat Aerosol: Automotive
Attached Images
File Type: png csm_2K-Klarlack-Klarlacke-und-Spot-Blender_afa09c6a77.png (292.5 KB, 173 views)
File Type: jpg how-to-spraymax-2k-clear-coat.jpg (38.9 KB, 172 views)
File Type: jpg instructions-on-back-of-can-480x182.jpg (18.8 KB, 172 views)
File Type: jpg spraymaxpattern-480x263.jpg (14.2 KB, 171 views)
  Reply With Quote
Old 6th November 2017, 10:13 PM   #4
mpmarino is offline mpmarino  United States
diyAudio Member
 
mpmarino's Avatar
 
Join Date: Jun 2004
Location: Northeast USA.
I'd definitely experiment with materials first.

I've had some bad luck in which it appeared that the oxide layer on the alu seemed to grow months later, clouding the whole thing.

I've always started with a spotless freshly scotch-brighted surface.

Maybe give it a lye bath just before coating? I never tried that.

edit: Oh, it's already anodized, forget the oxide layer comment... Will the clear even stick well without scuffing it?
__________________
Crazy Yankee.

Last edited by mpmarino; 6th November 2017 at 10:23 PM.
  Reply With Quote
Old 7th November 2017, 12:57 AM   #5
MadInventor is offline MadInventor  United States
diyAudio Member
 
Join Date: Jun 2015
Location: Iowa
I ended up using Krylon UV-Resistant clear matte acrylic coating, looks fine, like I didn't add anything to the surface, just what I wanted. Here's hoping it adds some scratch resistance to the surface.

MI
__________________
Smoke........ahhh...crap!
  Reply With Quote
Old 11th November 2017, 09:16 PM   #6
JMFahey is offline JMFahey  Argentina
diyAudio Member
 
JMFahey's Avatar
 
Join Date: Mar 2009
Location: Buenos Aires - Argentina
I made tons of Letraset labelled Guitar amplifiers for years (until I eventually mastered silkscreening)
Front panels could be actually quite impressive, dependes mostly on patience and working slow.

Either black or blue painted with white lettering or brushed/anodized/sandblasted aluminum with black lettering, a clear coat was mandatory , not to protect against scratching but plain removing letters with relative light friction.

Used some kind of another of clear Krylon.

Avoided the matte type because the matting agent causes a whitich hue/veil, just usedb the regular type which is crystal clear.

To avoid it being too bright and easily show fingerprints, I let it dry fully (say 1 or 2 hours) and then applied a single "matting" extra layer, from "too far away" on purpose so solvents partially evaporated while flying, and tiny droplets reached surface keeping their shape and not melying with others.
Try it once and youŽll understand what I mean, easy to control with a little practice.

Now and then I get an old amp for service (years or decades later) and panels hold quite well, although MI amplifiers get knocked around a lot.
__________________
Design/make/service musical stuff in Buenos Aires, Argentina, since 1969.
  Reply With Quote
Old 12th November 2017, 02:09 AM   #7
anjump123 is offline anjump123  United Kingdom
diyAudio Member
 
Join Date: Nov 2010
Location: London
Quote:
Originally Posted by Ultima Thule View Post
Label letters, aka. letter stickers etc., can be bought from just anywhere, you just need a steady hand and accurate eyes to get them in a nice line and spacing.

For the clear coat there's a special 2-component available in special spray bottles which comes outfitted with an extra internal chamber containing the hardener which is manually activated through a valve at the bottom of the bottle (see attached picture), when activated the two components starts to mix and cure so the pot life is max 48 hours in ambient temp(!!), the 2-component provides for a much tougher and durable surface.

Another advantage buying better quality spray bottle is, they usually come with a special shaped spray nozzle which provides for a much better spray pattern (similar to a real spray gun) and handling (see attached picture).

A good advice is to warm up the spray bottle gently up to ca 35-40 degrees Celsius, the solvents will atomize much better providing for a much better spray fume and result, if the bottle is too cold the tiny droplets are much larger and can even sputter with worse result.

2K Clear coat - SprayMax
Amazon.com: USC Spray Max 2k High Gloss Clearcoat Aerosol: Automotive
Be very, very careful with 2k products as they are extremely harmful if inhaled. I recommend an air fed mask when using these. Look up hazards of isocyanate paints.
  Reply With Quote

Reply


Clear coat anodized aluminum panel?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
varnish/clear coat help head_unit Multi-Way 3 30th November 2015 10:18 AM
Chassis side panel sources (extruded, anodized aluminum, like modushop) Renton76 Parts 0 10th December 2014 04:11 PM
Quality aluminum anodized front panel for your DIY projects Praudio Swap Meet 0 25th March 2013 04:39 AM
Do I have to clear coat my unfinished chassis? Smokebreak Construction Tips 2 28th July 2012 08:00 PM
Anodizing anodized aluminum Thomas Giz Construction Tips 8 11th June 2011 06:37 AM


New To Site? Need Help?

All times are GMT. The time now is 04:17 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki