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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38363 Sand Free - 11.6 oz

Product ID: 3699253

Details

Brand
SEM
Color
Clear
Item Form
Aerosol
Special Feature
Crack
Specific Uses For Product

🧩Softens plastic substrate for better paint bond

🧴11.6 oz aerosol can

🛠️Wet-on-wet adhesion promoter

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£31.04

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Description

🎨 Unlock flawless paint adhesion – because your project deserves the best!

TRUSTED BY PROS - Highly rated with 4.7 stars from 157 expert users
VERSATILE USE CASE - Ideal for both interior and exterior plastic surfaces
CRACK RESISTANT FORMULA - Durable protection that stands the test of time
EFFORTLESS ADHESION BOOST - Promotes superior paint bonding on tough plastics
PRECISION WET ON WET APPLICATION - Apply paint within 30 seconds for flawless finish

SEM 38363 Sand Free is a 11.6 oz aerosol adhesion promoter designed to soften plastic substrates, enabling superior wet-on-wet paint adhesion on difficult-to-sand areas. Crack resistant and suitable for interior and exterior use, it’s a professional-grade prep essential with a 4.7-star rating from 157 reviews.

Specifications

ASIN	B00B3HXM6I
Best Sellers Rank	#134,463 in Automotive ( See Top 100 in Automotive ) #128 in Automotive Spray Paint
Brand Name	SEM
Color	Clear
Compatible Material	Plastic
Container Type	Can
Customer Reviews	4.7 4.7 out of 5 stars (157)
Global Trade Identification Number	00646786383632
Included Components	SEM 38363 Sand Free - 11.6 oz
Item Form	Aerosol
Item Package Quantity	1
Item Type Name	SEM 38363 Sand Free - 11.6 oz
Item Weight	0.5 Pounds
Manufacturer	SEM
Model	38363
Other Special Features of the Product	Crack Resistant
Part Number	38363
Specific Uses For Product	Interior/Exterior
UPC	646786383632
Unit Count	11.6 Ounce
Volume	11.6 Fluid Ounces
Warranty Description	Warranty

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