Will this work with water based primers for exterior auto body parts?

I would not use this with a primer, It is designed to "melt" the color coat into hard plastics and takes the place of primer for paint adhesion

Can Sand Free be used on plastic chrome I want black out or will it soften and wrinkle the chrome coating?

You need to use SEM sku# 39863 if you are using an adhesion promoter. Sand Free is probably to agressive for the plastic chrome

Will this work for the textured Sail panels for my Avalanche?

I used it on the fenders/trim on a jeep wrangler and it worked very well. To answer your question it depends on exactly what kind if plastic you want to paint. SEM has a good website. Look up what plastic your sail panels are made from and see if SEM lists it as one that this works on. Just make sure to paint it while it is still wet with this solvent.

What is the difference between this and their other plastic adhesion promoters?

I haven't used mine yet, however, it is recommended in this paint system and I have seen the results when the instructions are followed as directed by the manufacturer. I am not going to risk using anything else.

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🛠️ Seal the deal with SEM Sand Free – where tough plastics meet flawless finish!

TRUSTED SEM QUALITY - Industry-leading adhesion promoter for plastics
PRECISION 11 6 OZ SIZE - Ideal volume for professional and DIY projects without waste
WET ON WET APPLICATION - Streamlines workflow by eliminating sanding hassles
EFFORTLESS ADHESION BOOST - Softens tough plastic substrates for flawless bonding
CRACK RESISTANT DURABILITY - Ensures long-lasting, resilient surface protection

SEM 38363 Sand Free is an 11.6 oz adhesion promoter designed to soften difficult plastic surfaces, enabling superior wet-on-wet bonding without sanding. Its crack-resistant formula ensures durable, professional-grade results, making it a must-have for builders and DIY pros aiming for flawless finishes on challenging substrates.

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Manufacturer	SEM
Brand	SEM
Model	38363
Item Weight	8 ounces
Product Dimensions	11.31 x 8.63 x 8.44 inches
Item model number	38363
Is Discontinued By Manufacturer	No
Manufacturer Part Number	38363
Special Features	Crack Resistant

SEM38363 Sand Free - 11.6 oz

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