Cross Hatch Paint Adhesion Test Kit

Art. No.: 12596

Cross Hatch Kit, PAT 2000 ASTM D3359

A kit of items perfect for any type of flat surface cross hatch adhesion test
BLADES NOT INCLUDED, but required for use. Click Here or visit the Accessories tab below to pick the best one for your application

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Adhesion Testers

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The Paint Adhesion Test Kit, (P.A.T.) is a visual adhesion test produced by GARDCO, used for evaluating adhesion by cutting the paint or coating into small squares (cross-hatches), thereby reducing lateral bonding
It contains tools and materials needed for conducting adhesion tests on paints and coatings, EXCEPT FOR THE BLADES (choose the one that fits your application best HERE)
It is in accordance with ASTM Test Method D3359, method B and DIN Standard No. 53151
The ergonomic handle design gives comfortable and precision control in cross hatch testing and helps keep your hand in a natural position, preventing strain and fatigue, great for both right and left handed people
There are two kits available:
- The Cross Hatch Test Kit (12596) is great for any type of flat surface cross hatch adhesion test
- The Cross Hatch Radius Test Kit (14407) is ideal for curved surfaces, surfaces with a radius and pipes
ALL BLADES are sold separately so you can choose what works best for your application. Find them in the Accessories tab below or Click Here - options include:
- Blade cutters with 4, 5, 6, 11, 14 and 16 teeth
- Blade cutters for pipe radius
- Variable spaced blade cutters (Due to the accuracy of the spacings and the speed with which the test can be conducted, it is the preferred tool for use in this test except when evaluations must be made on coatings applied to surfaces which are neither flat or relatively smooth. Under these adverse conditions a single razor blade type cutter is often desirable under method A of ASTM.)

Technical Data Chart

Data

Paint Adhesion Kit Cutter Blades
Part No.	Certified Part No.	Description	Teeth	Spacing	Cross Hatch Segment Area Square
12599	15512	Variable Spaced	14	See Variable Spaced Page	---
12634	15509	API RP 5L2 Blade	16	1.6mm	---
12632	15510	Coarse Blade	4	2.4mm	---
12608	12609	Coarse Blade	11	2mm	4.00mm
12610	12611	Coarse Blade	6	2mm	4.00mm
12603	15505	Fine Blade	11	1mm	1.00mm
12600	12601	Fine Blade	6	1mm	1.00mm
12605	12606	Medium Blade	11	1.5mm	2.25mm
12633	15511	Thick Coatings Blade	5	5mm	---
12612	12613	Very Coarse Blade	6	3mm	9.00mm
14409	---	Pipe Radius Blade	---	.75" Outer Diameter	---
14410	---	Pipe Radius Blade	---	1.98" Outer Diameter	---

As general guide for coatings having a dry film thickness up to and including 2.0 mils (50 µm) space the cuts 1 mm apart and make eleven cuts (12603) unless otherwise agreed upon. For coatings having a dry film thickness between 2.0 mils (50 µm) and 5 mils (125 µm), space the cuts 2 mm apart and make six cuts (12610) unless otherwise agreed upon. For coatings having a thickness greater than 5 mils (125 µm) space the cuts 5.0 mm apart and make 5 cuts (12633) unless otherwise agreed upon.

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Manuals

Cross-Hatch-Kit-PAT-Manual.pdfCross-Hatch-Kit-PAT-Manual.pdf

Prepare test specimen as outlined in ASTM D3359.
Position the blade in the handle with the holes facing the securing set screws, take care not to over tighten.
Place the cutter assembly on the test specimen so that the guide and cutter rests on the substrate.
Grasp handle and rotate it upward with respect to the line of contact of the guide with the test surface. During this motion, the tips of the cutter first contact the test surface when the top of the handle is about seven degrees with respect to the test surface. Continue this motion until the top surface of the handle is elevated to about 15 degrees. This is the correct attitude of the cutter assembly for the test.
Apply enough pressure on the handle to insure that all of the cutter tips penetrate the test specimen supporting base, pull assembly along the test surface through 0.75 to 1 inch. Repeat this procedure with a second cut intersecting the first pattern at 90° (±5°). Evaluate results of the test as indicated in ASTM D3359, method B.

PA 2000 Classification Image

Tips: Before shipment, our blades must pass a cutter blade tooth accuracy inspection check. You can periodically check the accuracy of your cutter blade in the same manner. Use a small piece of polished plate glass. With a match or lighter, smoke a portion of the glass. This will leave an extremely black thin film. With the blade mounted in the handle, pull it across the film. All teeth should make tracks. If all teeth do not touch when used on a coated panel it will indicate that the panel surface is not plane or one or more of the teeth have been damaged.

Some customers using the cross-cut (or cross-hatch) adhesion blades have had problem getting all the teeth to cut evenly through their coating. From our experience, we have found that uneven cutting is usually due to warped panels. When using the crosscut blades, it is important that the panel being scratched be supported by a flat, rigid table or surface. Additionally, sufficient force must be used for the blades to cut completely through the coating. Often this is a catch-22 situation. If your panel is not supported sufficiently, then more applied pressure simply bends the panel.