A panel support system for adjusting alignment of a flat panel, the system comprising: a longitudinal trough having two opposing side walls and a base connected therebetween, the trough being open on a side opposing the base, the trough being configured to be attachable to a surface; a gripping part for securely holding a section of the flat panel, the gripping part having a contact surface for engaging with a face of the flat panel and a first joint surface inclined obliquely to the contact surface, the gripping part locatable within the longitudinal trough with the joint surface at least partially facing the open side of the trough opposing the base; an adjustment part having a first end configured to be engaged with one of the side walls of the trough, the adjustment part having a second joint surface spaced from the first end of the adjustment part by a distance that is adjustable by a user, the second joint surface arrangable in contact with the first joint surface to form a joint, wherein changing the distance between the second joint surface and the first end of the adjustment part results in: a force being applied by the second joint surface onto the first joint surface, resulting in the gripping part gripping the panel and urging the panel toward the base of the trough; and pivoting of the panel within the trough about an axis parallel to a longitudinal length of the trough; and characterized in that the system further comprises at least one pair of resilient barrier units configured to be placed in the trough at opposing ends of the adjustment part such that a region in which resin is inserted, in use, is bounded by the barrier units in a direction along the axis parallel to the longitudinal length of the trough to prevent liquid resin flowing along a length of the trough. a longitudinal trough having two opposing side walls and a base connected therebetween, the trough being open on a side opposing the base, the trough being configured to be attachable to a surface; a gripping part for securely holding a section of the flat panel, the gripping part having a contact surface for engaging with a face of the flat panel and a first joint surface inclined obliquely to the contact surface, the gripping part locatable within the longitudinal trough with the joint surface at least partially facing the open side of the trough opposing the base; an adjustment part having a first end configured to be engaged with one of the side walls of the trough, the adjustment part having a second joint surface spaced from the first end of the adjustment part by a distance that is adjustable by a user, the second joint surface arrangable in contact with the first joint surface to form a joint, wherein changing the distance between the second joint surface and the first end of the adjustment part results in: a force being applied by the second joint surface onto the first joint surface, resulting in the gripping part gripping the panel and urging the panel toward the base of the trough; and pivoting of the panel within the trough about an axis parallel to a longitudinal length of the trough; and characterized in that the system further comprises at least one pair of resilient barrier units configured to be placed in the trough at opposing ends of the adjustment part such that a region in which resin is inserted, in use, is bounded by the barrier units in a direction along the axis parallel to the longitudinal length of the trough to prevent liquid resin flowing along a length of the trough. a force being applied by the second joint surface onto the first joint surface, resulting in the gripping part gripping the panel and urging the panel toward the base of the trough; and pivoting of the panel within the trough about an axis parallel to a longitudinal length of the trough; and