Practical Guide
Basecoat Application with the SATAjet X 5500: Speed, Overlap, Spray Pattern
With the X nozzle system of the SATAjet X 5500, you achieve reproducible basecoat results – fast, homogeneous, and material-saving. This practical guide shows you how to optimally combine speed, pass overlap, and the right spray pattern (I/O). You also get reference values to start with, a clear workflow, and quick troubleshooting.
Product Overview for Basecoat
| Variant | Recommended Use | Key Advantages |
|---|---|---|
| HVLP | Effect/basecoats when overspray minimization is the focus | Very high transfer efficiency, soft spray pattern, material-saving |
| RP | Fast surface coverage, efficient base tinting, reliable edge coverage | High material throughput, quick application, stable jet |
| X nozzle system (I/O) | Adjustable to material/technique: compact (I) vs. soft/wide (O) | Reproducible, finely adjustable, low-noise (whisper nozzle) |
70% Overlap
Proven starting point for homogeneous basecoat surfaces
Constant Speed
Even finish without clouding or edge zones
I vs. O
I = compact/powerful, O = soft/wide – adjust on test panel
Practical Tip:
Effect coats (metallic/pearl) should first be “set” with the I spray pattern, then gently “closed” with the O spray pattern. Carry out the final mist coat from a greater distance very evenly to avoid clouding.
Reference Values for Basecoat
Always check material datasheet and manual. Values are starting points and may vary depending on system/temperature.
| Setup | HVLP | RP |
|---|---|---|
| Inlet Pressure | approx. 2.0 bar | approx. 2.0–2.3 bar |
| Nozzle Size (X) | 1.2–1.3 (I/O) for basecoats | 1.2–1.3 (I/O) for fast application |
| Spray Distance | approx. 13–18 cm | approx. 15–20 cm |
| Pass Overlap | approx. 70% as starting point | approx. 70% as starting point |
Note: Values are reference points; always check pressure at the inlet (digital/manometer).
Professional Workflow for Basecoat (6 Steps)
- Prepare substrate: clean, dust-free, correct grit; check adhesion primer.
- Choose spray pattern: I for setting/edges, O for soft closing of large areas.
- Set reference pressure, spray test panel; adjust jet to be homogeneous.
- First pass with approx. 70% overlap, constant speed; start with edge zones.
- Short flash-off as per TDS; optional mist coat from slightly greater distance.
- Visually check (clouding/shading); if necessary, adjust pressure ±0.1 bar and distance ±2 cm.
Troubleshooting (Basecoat)
Clouding/Shading
- Increase overlap and stabilize speed.
- Test O spray pattern for softer application.
- Slightly increase pressure and adjust spray distance.
Dry Edge Zones
- Spray slightly slower or reduce distance.
- Lower pressure slightly, adjust to wider jet (O).
- Perform mist coat from greater distance.
Too Coarse Effect
- Increase distance slightly, raise pressure moderately.
- Use finer mist coat for blending.
- Check/adjust viscosity according to TDS.
Overspray/Misting
- Use HVLP or slightly reduce pressure.
- Optimize distance, ensure air is dry/oil-free.
- Improve extraction/airflow in the booth.
Maintenance (for Consistent Basecoat Quality)
- Clean nozzle/needle after each use; keep channels clear.
- Regularly check seals and air cap, replace if necessary.
- Lightly lubricate moving parts; maintain threads.
- Keep filters/couplings/hoses tight and dry.
- Store dust-free, dry; protect cap from impact.
FAQ Basecoat with the SATAjet X 5500
How much overlap is sensible?
Approx. 70% as a starting point. Adjust depending on effect/temperature.
I or O for metallic?
Set first pass with I, close softly with O; always check on test panel.
Which nozzle to start with?
1.2–1.3 (HVLP/RP) are common starting points – reference values.
How do I avoid clouding?
Keep speed constant, overlap 70–80%, if needed slightly higher pressure and O spray pattern.
Do I need the digital version?
Not mandatory, but helpful: inlet pressure can be set directly and reproducibly.
Conclusion
With the SATAjet X 5500, you combine the right spray pattern with constant speed and 70% overlap to achieve homogeneous basecoat surfaces. Fine adjustments in small steps (pressure/distance) and a quick test on a sample panel ensure reproducible results.
