How do you coat your boxes?

jzagaja · 13th September 2009, 02:04 PM

I coat mine with two compound polyurethane (white enamel) but can't get smooth surface, an orange peel is a problem. Have tried HP 1.4 and HVLP 1.7 tips with different pressures. I know it is easier with automotive paints but they are expensive and my box is made of chipboard with polyester filler - not worth extra lacquers.

I would try soft-coatings like Alexit and Nextels from Mankiewicz.de but as you see I can't learn even simple spraying.

What's your experience guys?

T in AZ · 13th September 2009, 02:31 PM

orange peel = not enough reducer or thinner

jzagaja · 13th September 2009, 05:42 PM

I'm reaching manufacturer maximum (20%). Isn't it simpler with acrylic urethane? Poly requires 12 hours between layers. I don't use oil compressor but have some water and just one fine grain filter before gun. Isn't it simpler with water base enamels?

T in AZ · 13th September 2009, 06:20 PM

You are using a hardener ? I wouldn't worry about going a little higher with the reducer, test it out with a small test shoot. Poly should be wet sandable in 6-8hrs. Water enamels are softer and don't have depth.

jzagaja · 13th September 2009, 07:29 PM

I'm using hardener (20%). Ok so here is my idea: 30% thinner, 1.4mm HP tip, 5 bar, wide flux and cross painting.

T in AZ · 13th September 2009, 08:03 PM

Sounds good, I have gone higher with the reducer, but it gets a little tricky.

jzagaja · 14th September 2009, 06:40 AM

Do you also sand your work? I'm so tired with hand sanding. Yato (former Toya) produces orbital random sander which consumes only 57 litres (2cfm) targeted to pro market.

13th September 2009, 02:04 PM	#1
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	How do you coat your boxes? I coat mine with two compound polyurethane (white enamel) but can't get smooth surface, an orange peel is a problem. Have tried HP 1.4 and HVLP 1.7 tips with different pressures. I know it is easier with automotive paints but they are expensive and my box is made of chipboard with polyester filler - not worth extra lacquers. I would try soft-coatings like Alexit and Nextels from Mankiewicz.de but as you see I can't learn even simple spraying. What's your experience guys?

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13th September 2009, 02:31 PM	#2
T in AZ diyAudio Member Join Date: Jul 2009	orange peel = not enough reducer or thinner

13th September 2009, 05:42 PM	#3
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	I'm reaching manufacturer maximum (20%). Isn't it simpler with acrylic urethane? Poly requires 12 hours between layers. I don't use oil compressor but have some water and just one fine grain filter before gun. Isn't it simpler with water base enamels?

13th September 2009, 06:20 PM	#4
T in AZ diyAudio Member Join Date: Jul 2009	You are using a hardener ? I wouldn't worry about going a little higher with the reducer, test it out with a small test shoot. Poly should be wet sandable in 6-8hrs. Water enamels are softer and don't have depth.

13th September 2009, 07:29 PM	#5
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	I'm using hardener (20%). Ok so here is my idea: 30% thinner, 1.4mm HP tip, 5 bar, wide flux and cross painting.

13th September 2009, 08:03 PM	#6
T in AZ diyAudio Member Join Date: Jul 2009	Sounds good, I have gone higher with the reducer, but it gets a little tricky.

14th September 2009, 06:40 AM	#7
jzagaja diyAudio Member Join Date: Jun 2004 Location: Szczecin	Do you also sand your work? I'm so tired with hand sanding. Yato (former Toya) produces orbital random sander which consumes only 57 litres (2cfm) targeted to pro market.

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