35 replies to this topic

[bluemini17]

Hey all,

 

As per the title, I have read and watched a serious amount of literature and videos and have now taken the plunge.

 

I painted the inside of the roof as this will never be seen and I could do with the practice.

 

 

 

My observations were:

 

The primer flashed in good time, hardly any orange peel

 

Block sanded with 400 and then shot the colour, 50% colour 50% thinner.

 

Colour landed well, I then gave it another coat with 30% colour 70% thinner. very small amount of orange peel.

 

Paint appeared very dull, very limited gloss and reflection.

 

I then cut it with some T-cut I had lying around on a microfiber cloth for approx 5mins with my hand - no machine (this was the random experiment)

 

 

Started to get a reflection.

 

I then wet sanded with 1000, and then cut it with T-cut by hand

 

 

A much improved reflection.

 

From my reading I feel if i then did the same with 2000 w/d and then machine buff with the appropriate compounds / polishes i should get a good result. Obviously I wouldn't be polishing between sanding. That was just for the purpose of the experiment.

 

Just thought I would share my random afternoon with you all.

 

I will update this thread when the time comes for my final paint and cut / polish. should be interesting

 

[Wise Old Elf]

Interesting: are you painting now? I dashed a small part over in my garage the other day and there was too much moisture in the air as the result was a milky finish.

Are you heating the garage?

 

I want to paint my car in celli next year but am hesitant about doing it before Spring.

[bluemini17]

Yes, I am heating to 21 Degrees Celsius, or as close to that. On average I have been able to raise the garage temp by 11 Degrees Celsius from the outside temp.

 

I have read about the milky flash as you call it, you can use slow flash thinners, anti bloom,  to reduce the problem. This is only from what I have read and have no real experience.

[Carlos W]

Interesting: are you painting now? I dashed a small part over in my garage the other day and there was too much moisture in the air as the result was a milky finish.

Are you heating the garage?

 

I want to paint my car in celli next year but am hesitant about doing it before Spring.

 

I'm in exactly the same boat mate. Unless I can use my mates garage and heat it I wont be painting before the weather gets a lot warmer

[Wise Old Elf]

http://www.mig-weldi...aint-faults.htm

 

This is a good site for paint faults.

 

I have limited experience of paintwork as our work garage was never clean enough to paint a whole car but I am planning to tent up my home garage and give it a go. My car is black so the milky effect will show up a lot. Heating may be an option in early spring when its dryer?

 

Will be interested to hear how you get on.

[bluemini17]

Thanks for the link, that was one of the first sites i visited, firstly for welding tips and then the start of the paint learning curve. Fantastic resource of knowledge.

I will update this thread as I go.

[germini30]

Are you better to paint in a heated garage on a cold dry day rather than a warm wet day?

[mini stephen]

I have watched my father paint for years with both 2k and celli no matter the weather outside he always turns on his fan on the gable end to circulate air lightly dampins the floor to both stop dust lifting and when u use the heater it dries out the air we have a big garage for painting in ud get bout 5 minis in we heat it with a space warmer turn off between coats then back on and keep in the floor slightly wet for the most part after a week or so we do a light cut with soapy water and buff job done this maybe right or wrong but has worked as long as I can rem

[Stu.]

Just a point to note. The warmer air is the more moisture it can hold. Bodywork (metal) is a cold surface in a garage or outside, so air moisture will want to condense on it, regardless of how warm your garage is. So spraying in a warm garage wont always prevent blooming.

The best time to spray is when the weather is naturally warm and there is less temperature difference between the body of the car and the air.

[bluemini17]

Top tip by stu.

I have a humidity meter setup and I am currently experimenting with dew points etc. I will report back with findings :)

[Wise Old Elf]

Interesting. The meters are pretty cheap on Ebay.

 

What % humidity should I be looking for in the garage?

[germini30]

Hi have been offered a space heater today that runs on gas. My garage is only 14 x 12 so this would heat it up. I have got the doors boot and bonnet left to do. Would this be good as I could heat the panels up aswell as the garage?

[Craig89]

Hi have been offered a space heater today that runs on gas. My garage is only 14 x 12 so this would heat it up. I have got the doors boot and bonnet left to do. Would this be good as I could heat the panels up aswell as the garage?

The thing with gas space heaters is that they introduce moisture into the air so they're not ideal

[bluemini17]

My humidity went up by 5 when I ran the gas heater for approx 3 hours, not to much in the grand scheme of things. Average humidity has been 55 in the garage. The likes of california etc see 110's. I am running one large moisture trap and also a moisture trap at the gun. It's surprising how much water is caught.

In drinking terms, atleast half a shot! I've had similar amounts drain out of the compressor when I bleed it before use.

I have not sprayed any colour coats recently so no updates on the experiment as yet.

[Coxie]

I spray in my workshop all year round and use the anti bloom thinners most of the year and switch to fast thinners during the winter.
I never do any paint or lacquer work when it is either chucking it down or foggy.