OBO Precision Blog
Engineering guides for dispensing machines, potting systems, materials, applications, equipment selection, and troubleshooting.
What Is the Best Dispensing Process for EMI Shielding Adhesives?
EMI shielding adhesives are not dispensed like ordinary sealants. The process must control bead shape and placement without damaging conductivity, filler distribution, or interface quality.
How Do You Prevent Needle Dripping After Dispensing Stops?
Post-stop needle dripping is a control problem between material behavior and valve shutoff. If the system keeps storing pressure after the dispense event, the material
Why Does Resin Cracking Happen After Potting?
Cracking after potting is usually a stress-management problem, not only a material brand problem. The crack may appear because the cured resin, the product geometry,
How Should Buyers Evaluate Dispensing Machine Repeatability Specifications?
Repeatability is one of the most abused words in dispensing equipment sales. A machine can have good motion repeatability and still produce unstable beads if
Epoxy Potting vs Silicone Potting for Automotive Electronics
Automotive electronics rarely need the 'best' potting material in the abstract. They need the material that matches the mechanical stress, temperature cycle, substrate combination, and
How Do You Calculate Cycle Time for an Automatic Dispensing Line?
Cycle time in automated dispensing is not just robot speed. Factories often underestimate the real takt because they ignore loading losses, valve response, cure buffering,
How Do You Reduce Voids in Vacuum Potting Applications?
Vacuum potting does not eliminate voids by itself. It only creates better conditions for air removal. Engineers still need the right resin condition, fill path,
How Should Engineers Choose a Dispensing Valve for Different Adhesives?
A dispensing valve should be matched to the material and process, not just to the machine frame. Engineers who choose only by catalog name often
What Causes Incorrect Mix Ratio in 2K Dispensing Systems?
Incorrect mix ratio in a 2K dispensing system is rarely a single-parameter fault. Most lines drift because the pumps, material feed behavior, purge method, and