bonda zinc rust primer on clean bare metal?

[molten]

Hello
Anyone know if this primer is ok to use on clean bare metal instead of etch or phosphate?
Got over 2 lts left and wondering if ok to use on triumph spitfire bare body before HB primer.

Cheers

 

[molten]

Please help!!!
Someone on here will definately know the answer.
Thanks

 

[steveo3002]

i think its fine to use on bare metal , if its just clean metal then etch or epoxy might well be a better choice

but yeah bonda is well liked amonst car resto people

 

[Chickenjohn]

Zinc primer is OK over bare metal. May not adhere as well as etch though.

Would be a good idea to really key the metal - use coarse sand paper for this.

 

[kelsham]

They used to sell bonda primer with Jenolite and call it double act. I suppose the Jenolite would prepare the metal much as an etch primer?

I have used Bonda primer straight on to clean bare metal without problems. I have had the odd problem with small patches of topcoat not adhering and peeling off.

Keying the surface would probably have stopped this happening. I like Bonda primer but it seems to have disappeared from the market.

The paint that lifted was cellulose.

Regards Kels.

 

[molten]

Hello All
Thanks for your comments.
Below are question I asked of the supplier & their response.

I recently purchased 2.5 ltrs of this from you. But could you tell me it this paint would be good enough to prime the rust-free bare metal of a car instead of using etch or zinc phosphate?

Does it have good enough adhesion properties to such a surface providing the surface is abraided first. If you feel that an etch or phosphate paint would be better suited, please let me know ASAP.

Their reply:
The answer to both of your questions is yes. This is a well regarded product through our industry.

So with some 80 grit sandpaper to abraid bare metal (& filler where applied) - this should be ok.

Thanks all

 

[steveo3002]

id go more like 180

 

[molten]

id go more like 180

sorry mate
missed a 1 off that grade.

Do you recon this primer could also be used to go straight over internal paint finish as well?

Cheers

 

[steveo3002]

yes it goes over most stuff ive found , obviously wont offer any of its claimed protection abilitys over existing paint so its a waste really

any sound paint id just scuff it with a scotch pad and paint over it with your top coat

 

[langy]

I don't know any restorers that use that stuff, horrible stuff, only cowboys use that.

i think its fine to use on bare metal , if its just clean metal then etch or epoxy might well be a better choice

but yeah bonda is well liked amonst car resto people

 

[Balders]

I like Bonda primer but it seems to have disappeared from the market.

Your local Brown Bros can get it. Mine will/do

 

[molten]

anyone else agree with Langy's comment?
Cheers

 

[kelsham]

bonda primer

I can see where he is coming from. Anything other than shotblasting and thorough cleaning off is second best.

However I have several cars covered in Bonda primer that I have Jenolited first, and apart from the cellulose lfting in one or two small areas, probably due to not rubbing down between coats, they are stopping the rust.

I still like it as a product. There seem to be several different new remedys on offer at the present time.

I have heard complaints about POR from people who have not applied it exactly as instructed.

What is needed is a product that can be easily applied. I am currently testing Bilt Hamber rust converter and their zinc based primer.

Any suggestions for other products and experiences are very interesting.

Regards Kels.

 

[jordan1]

Anyone remember the old Bondaprimer?

 

[pedrobedro]

I use zinc 182 similar to bonda zinc on floor and sill patches under underseal or schutz but not on upper panels where a good finish is important.