Many joinery companies have long experienced problems cutting glazing beads for windows and doors. The problems are not only related to accuratly cutting the bead to the correct length, but also the different angles that may be required.
Typically a bead with a 45 degree mitre at the top of a sash would have a 7 to 17 degree bevel at the bottom to match the corresponding bottom bead. This results in the two bottom angles having to be cut in two different planes. Therefore this means that it is not usually possible to cut both the top and bottom angles simoultaneously and so two different cutting operations are often required. This is not only time consuming but also potentially causes errors in cutting accuracy.
Omga who specialise in the manufacture of precision single and twin blade mitre saws worked closely with JJ Smith to come up with a practical solution to this problem, the result of which is a dedicated simple to use three head NC controlled programmable mitre saw capable of cutting all the required beads to length and at the appropriate angle.

The unique TRF 527 / 3NC 3 head mitre saw is an extremely simple machine to use that only requires the operator to input on the controller the length and width of the sash and the angle and thickness of the bottom bead.

A visual display shows the size and angle of the beads to be cut. The ease of which it is possible to change the quantity, angle of cut and sash size makes the machine suitable for both long and short production runs, plus there is the added advantage of repeat accuracy of cut and safe operation.

It is estimated that with this machine it should be possible to increase production by at least 50% while using fewer individual machines.
As an alternative to the above programmable machine there is also the popular TRF 527 standard twin head mitre saw for cutting glazing beads and mouldings that do not require a bottom scribe angle.

Both the saw heads can quickly and easily rotate from 90 to 45 degrees and can be locked at all intermediate angles.

The machine can cut two beads simultaneously, not only doubling the output of a conventional twin mitre saw but also guaranteeing that both beads are perfectly matched in length.

Various length setting configurations are available from handwheel setting with a mechanical digital readout to the NC model with the capability to memorise 99 different length settings.