?Estimate annual finger joint lamella production for CLT/GLT manufacturing.
Operating Data sets the schedule, breaks, downtime and lost time. Production Data sets the block size, feed speed and lamella dimensions.
Production Outputs show available and production hours, net lamella volume, fibre loss and block throughput.Finger Joint Production Calculator
Gray boxes are editable cells; all others are calculated.
Finger Joint Production Calculator
Operating Data
?Min 40, max 52.Operating weeks per year
Statutory holidays per year
?Hours for day shift and afternoon shift. Typically 8 hours. Min 7.5, max 12 hours. For 2 shifts, combined hours cannot exceed 16. A 2.5 or 3rd shift, if selected, is calculated based on remaining hours available after the two regular shifts (and is limited to 8-hour regular shifts).Hours per regular shift hrs
?A lunch break is calculated every 4 hours. For example a 9 hour shift would require another lunch break.Lunch break min
?A shift break is calculated every 2 hours (not including lunch break).Shift break min
?Number of operating shifts per day: 1, 2, 2.5 or 3. 2.5 means two full shifts plus a half (50%) third shift. A 2.5 or 3rd shift can only be selected if regular shift hours are 8 or less.Operating shifts per day
?Efficiencies are lost on 3rd shift due to less cleanup and maintenance time. This only applies if a 3rd shift is selected.Efficiency loss on 3rd shift %
?The % of available time that there is an order file for production. >=80 and <=100.Order file booked %
?Percentage of production hours lost to unplanned downtime, maintenance, etc. >=0 and <=25.Operational downtime %
?Time lost waiting for finger joint blocks. >=0 and <=25.Waiting on downstream %
?Time lost waiting for planer or press. >=0 and <=25.Waiting on upstream %
Dimension changes per shift
Time to change dimension min
Production Data
Avg. finger joint block length m
?Wafer trim on each end of finger joint blocks.End trim for square up mm
Lineal feed speed m/min
?Set to "0" if continuous feed.Stop time for jointing sec
?The distance traveled for the board to come to a stop or accelerate back to full speed. Must be >=.100 m.Decel/accel distance m
?Maximum number of finger joint blocks per minute that can be processed into the finger joint infeed system.Max FJ infeed blocks/min
Finger joint length mm
Finger joint block thickness mm
Finger joint block width mm
Eased edge radius mm
Min. planer allowance mm
?Lamella thickness must be <= the finger joint block thickness minus 2 x planer allowance.Lamella thickness mm
?Time it takes for resorcinol–formaldehyde (RF) adhesive or melamine‑based structural adhesives glue to cure in an RF tunnel.RF tunnel glue cure time sec
Production Outputs
?Calculates width after removal of eased edge (if applicable).Lamella width 136.450mm
?Calculated length of an RF tunnel required if resorcinol glue is used.RF tunnel minimum length 12m
?Total hours including breaks (except lunch breaks).Available hours per year 3,968hrs
?Available production hours net of breaks, downtime and lost time due to lack of order file.Production hours per year 2,304hrs
?Equipment availability net of breaks and downtime.Operational readiness 58%
?Net volume after fibre loss with square-up, fingers, and lamella planing.Net volume per year 64,426m³
?Volume per hour based on total hours available to operate.Volume per available hour 16.2m³
?Volume per hour based on operating hours available (after breaks and downtime).Volume per production hour 28.0m³
?Losses for end square-up, fingers and planing to lamella size. Losses for flying cut off saw are not included.Fibre loss 8,264m³
Fibre loss 12.8%
FJ blocks per available minute 23.2
FJ blocks per producing minute 40.0