Aprende a pintar y hacer un esfume con blender en sistema bi capa base color repintado automotriz

Summary

The video demonstrates an automotive spot repair on a fender using a two-stage system: color basecoat followed by clearcoat. Rather than ending the clearcoat at a hard edge, the instructor uses a blender to soften and hide the clearcoat overspray edge.

Process and key details

• The repair area is sanded with 400-grit paper. Areas that will receive clearcoat but no color are sanded with 800- or 1000-grit paper.
• For wet sanding, the instructor recommends soaking new sandpaper for about five minutes so grit settles and is less likely to leave scratches.
• He cautions against masking directly at the blend edge, as sanding later can reveal a visible edge or apparent lifting. Instead, he leaves the clearcoat edge to be blended.
• The basecoat’s shade value is 5 on a scale from 1 (white) to 7 (black). He stresses using the specified shade value for an accurate match.
• Basecoat is mixed 1:1 with reducer and stirred thoroughly to distribute metallic particles evenly. Measuring cups help control the ratio and avoid preparing more paint than needed.
• With a gravity-feed gun, the instructor starts at around 25–30 psi, then adjusts the fan and pressure after testing the spray pattern. He applies progressively broader coats:
  1. Cover the repair.
  2. Extend the coat somewhat farther.
  3. Gradually blend the new color into the original without expanding the repair across the adjacent panel.
• He waits about five minutes between basecoat coats.
• The clearcoat used is Permacron, described as a high-solids product. It is mixed 2:1 with HS hardener, plus 10% reducer. For 150 ml of mixture, he calculates 15 ml of reducer.
• Before applying clearcoat, he lightly removes dust and lint with a tack cloth. He warns that excess tack-cloth resin can cause fisheyes.
• He applies a lighter first clearcoat, waits about five minutes, then applies a wetter second coat. He adjusts gun pressure, distance, and fan between coats.
• To blend the clearcoat edge, he uses Tecnoblender by Atler. He mixes it with the small amount of clearcoat remaining in the gun, then applies it at roughly 20–25 psi with a narrowed fan. He advises using only a light, controlled pass; too much can cause runs or fisheyes.
• The instructor also recommends cleaning the gun with about three rinses of acrylic thinner and using lint-free wipes rather than cotton, which can shed particles.

Pros and limitations

Advantages: The blend can save basecoat, help camouflage a slightly uncertain color match, avoid painting an entire adjacent panel, and make the clearcoat transition less noticeable.

Limitations and cautions: The technique requires careful control of the blend area and spray application. Overapplying blender can cause runs or fisheyes, while dust, lint, or tack-cloth residue can spoil the finish. The work is shown outdoors, where contamination is a concern.

The instructor reports no visible color variation after checking the repair in sunlight. The video does not provide a durability test or a numerical rating.

Comparisons and overall verdict

The blending approach is presented as an alternative to masking the clearcoat edge or repainting a much larger area, such as the whole adjacent panel. The demonstration suggests the method is useful for small-to-medium repairs when saving materials and achieving a discreet transition matter, provided the color, ratios, surface preparation, and spray technique are controlled.

Speaker

One instructor provides the demonstration, product and mixing guidance, and final assessment. No other speakers offer separate views.