Apply a Pasty Product

To apply a Pasty product (P25, P35, P80 Ra, or P51 SD), inject it with the nozzle in permanent contact with a degreased surface. Then flatten the back with a card. In a through bore, withdraw the nozzle before the far end and leave a surplus as a grip.

When to Use a Pasty Product

A Pasty product stays where you put it. You can use it on external, vertical, or overhanging surfaces, for partial impressions, and in through bores where a Fluid would run out.

P25 and P35 are Flexible, with a maximum removal constraint of 30% and 20%. P80 Ra, for roughness, and P51 SD are Rigid, so the shape must have no undercut.

Step by Step

On an external surface, you apply the product directly from the cartridge.

1. Degrease the surface. Spray DN1, then wipe with a clean microfiber until the surface is dry.
2. Insert the cartridge into the dispensing gun with the key at its base facing down, then lock the nozzle with a quarter turn to the right.
3. Do not clip a tip on the nozzle. A Pasty product is too viscous, so the flow would be too low and the pressure too high.
4. Extrude a test drop next to the part and check that it has one uniform color.
5. Press the nozzle against the surface and keep it in permanent contact while you inject with a slight pressure, so the product enters every detail.
6. Lay a generous layer so the impression is easy to handle afterwards.
7. Compress the product lightly with a flat object, such as the extraction card of the Double Blade Cutter or a business card. This pushes the product into the fine details and gives the impression a flat back.
8. Wait for polymerization, check the test drop with a fingernail, then pull the impression straight off.

In a Through Bore

With P35, you do not need to plug the bottom of the bore. Inject the product, and before it comes out on the other side, withdraw the nozzle little by little while leaving a surplus of product. That surplus is the grip, so no demolding ring is needed.

Why the Flat Back Matters

The flat surface made with the card gives a cleaner cut with the Double Blade Cutter, and a slice that lies flat on the measuring plate.

P51 SD is the fastest product of the range, with a working time of 20 seconds. Have the card ready before you inject.

Related Pages

• Initial Consistency
• Slice an Impression with the Double Blade Cutter
• Measure Surface Roughness with Contact