Spot Spraying Polyurethane

[MainlySteam]

Has anyone tried very small spot spray repairs of polyurethane paint without using commercial spray painting equipment? As an example (which may or may not work) a small airbrush spray or something similar?

Any experiences would be appreciated.

Thanks

John

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[William_H]

I think your best bet might be to brush the urethane on the patch. It is reputed to be extremely toxic when sprayed and considering the effort of getting the viscosity right cleaning sprays and overspray problems I would suggest brush followed by a sandingg and polishing regime. Try brushing you could always spray over if you are not satisfied. regards ole will

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[oldsaltoz]

G'day John,

See I told you he had a shot gun......

A tiny brush with a tiny point, then 800 the 1200 wet and dry [used wet] then cutting compound then polish, then wax.

Sounds like a lot of work but it only takes minutes, unless he was at close range and peppered your beam.

Avagoodweekend..........



<hr width=100% size=1> Old Salt Oz /forums/images/icons/cool.gif Growing old is unavoidable. However, growing up is still optional.

 

[MainlySteam]

Well oldsaltyone I can recount an episode as a kid lying in the bottom of a yacht while the pellets landed all about us until we got out of range of an irate farmer on a river bank whose watermelon patch we had just raided.

However, in this case these are just the minor nicks one accumulates and was wondering if there was another way of fixing them. With the brush and sand bit I find (fumble fingers maybe) that it is too easy for me to scuff into the adjoining paint so that a thin spot appears. Came to mind from seeing the yards just give a little blast and blend the edges into the surrounding with a paint gun.

Just got back from the lucky country again last night but back over there again in a week - lucky me /forums/images/icons/smile.gif.

Regards

John

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[Joe_Cole]

If you are talking about two pack polyurethane then do listen to William's warning. It can be very nasty when sprayed unless you use proper air fed face masks (the simple paper ones just won't do). Different people will react differently to the fumes but, unless you are given medical tests for it, you would not want to find out the hard way that you have an adverse reaction!

In answer to your question, yes, you could use a small airbrush and get very good results. However, unless you really do have the skills you won't find it easier than using a brush.

Joe

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[MainlySteam]

Thanks for that Joe.

Yes I am aware of the dangers (among other things I manage the design and construction of big boats for clients) and it is important to be alert to them.

Seems from your comment that an air brush would work, so given the cheapness of them I might give it a go then. At worst, I could relegate it to use for censoring my questionable collection of photo's /forums/images/icons/smile.gif.

Regards

John

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