By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

Etch Primer life

All Topics | Latest Posts

Search for:  in Thread Title in  
Bob Unitt 108/12/2021 11:35:53
avatar
222 forum posts
33 photos

Does anyone know how long Phoenix 2-part Etch Primer remains usable for brush application once mixed, if kept in a sealed container ? I tried emailing them with this question, but no response sad

Robert Atkinson 208/12/2021 12:31:49
avatar
1238 forum posts
20 photos

Any 2 part paint is unlikely to keep for very long once mixed. Putting in the fridge will help. Some 2 part materials can be frozen once mixed to stop them curing. This is used for some ircraft sealants.

The Phoenix website says 3 hour pot life. Closing the lid will make no difference to this.

https://www.phoenix-paints.co.uk/products/60pq31

Robert G8RPI.

Adrian R208/12/2021 13:22:30
164 forum posts
5 photos

On Youtube you can find a video from "Trev's blog" where he shows how to carefully weigh out and mix small quantities of 2 pack paint - OK that is automotive small, not model engineering small, but may still be helpful.

Martin Kyte08/12/2021 13:24:30
avatar
2781 forum posts
53 photos

One year if I remember correctly.

regards Martin

Bob Unitt 108/12/2021 14:33:05
avatar
222 forum posts
33 photos
Posted by Robert Atkinson 2 on 08/12/2021 12:31:49:

Any 2 part paint is unlikely to keep for very long once mixed. Putting in the fridge will help. Some 2 part materials can be frozen once mixed to stop them curing. This is used for some ircraft sealants.

The Phoenix website says 3 hour pot life. Closing the lid will make no difference to this.

Robert G8RPI.

I thought that time-limit was just for spraying ? I know the 1-part primer is good for a month before it loses the ability to etch, and was wondering if the 2-part is just the components of the 1-part in a form which will last longer until mixed ?

Edited By Bob Unitt 1 on 08/12/2021 14:36:38

Oldiron08/12/2021 14:50:24
995 forum posts
40 photos
Posted by Martin Kyte on 08/12/2021 13:24:30:

One year if I remember correctly.

regards Martin

Only when unmixed.

regards

Dave Halford08/12/2021 16:10:22
2091 forum posts
23 photos
Posted by Bob Unitt 1 on 08/12/2021 14:33:05:
Posted by Robert Atkinson 2 on 08/12/2021 12:31:49:

Any 2 part paint is unlikely to keep for very long once mixed. Putting in the fridge will help. Some 2 part materials can be frozen once mixed to stop them curing. This is used for some ircraft sealants.

The Phoenix website says 3 hour pot life. Closing the lid will make no difference to this.

Robert G8RPI.

I thought that time-limit was just for spraying ? I know the 1-part primer is good for a month before it loses the ability to etch, and was wondering if the 2-part is just the components of the 1-part in a form which will last longer until mixed ?

Edited By Bob Unitt 1 on 08/12/2021 14:36:38

Bob,

Think of it as a car body filler, once you add the oxidizer hardener the result is only altered by temperature.

1-part is ordinary acrylic paint and dries mostly by solvent evaporation.

2-part requires the hardener to be added to effect 'drying' and based on isocyanates it's very nasty to breathe.

The etch action is an entirely separate to the drying process

Steviegtr08/12/2021 17:52:47
avatar
2456 forum posts
339 photos

I think here the general rule is, only mix what you need. There is no need to mix the whole tin. I use 2 part products a lot. Fibre glass resin. Primers, & clear coat. I try & work out how much i need & then just mix a little more.

Steve.

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Support Our Partners
Eccentric Engineering
Rapid RC
Dreweatts
cowells
Eccentric July 5 2018
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate