Influence of press temperature and proportion of added catalyst on growth shear strength of urea-formaldehyde (UF) adhesive bond during cure was investigated. Specimens of beech veneer (Fagus sylvatica L.) were glued with adhesive LENDUR-200. Thickness of veneer was 1.1 mm, moisture content 7 %, and adhesive coating 200 g/m2. Specimens were tested with Zwick Z100 universal testing machine, by method "Dynamics of the Bond Strength Development" (DBSD), on a modified "Automated Bonding Evaluation System" (ABES) method. The machine had a mounted small hot-press, gluing specimens at compression pressure 1.2 MPa. Curing of UF adhesive mixture, which contained 100 parts of UF adhesive and 1 part of dry catalyst NH4Cl, was investigated at 4 different pressing temperatures: 90, 100, 110, 120 °C. At pressing temperature 100 °C, curing of 4 different UF adhesive mixture having the same quantity of UF adhesive (100 parts), was investigated. The proportions of added catalyst: 0,1 part, 0,5 part, 1 part, 2 part were different. Pressing time was from 20 to 180 s, by one adhesive mixture to 600 s. Results showed that the strength development of UF adhesive bond developed quicker at higher temperatures than at lower ones. Increasing the proportion of added catalyst to the UF adhesive mixture, the strength of curing increased, so as the speed of the strength development of adhesive bond. Wood failure appeared, when adhesion between adherent and glue surpassed cohesion of wood.