Abstract: Device, method and kit, the device comprising a body and a sliding member. The body comprises a sliding channel, a first reference-clipping-surface and a filler-resting-surface. The first reference-clipping-surface and filler-resting-surface are coplanar. The body comprises a filler-clamp. The sliding member slides perpendicularly to the first reference-clipping-surface. The sliding member comprises a second reference-clipping-surface parallel and non-coplanar to the first reference-clipping-surface, a filler-clipping-surface perpendicular to the filler-resting-surface and a reference-clamp. The first and second reference-clipping-surfaces are configured to releasably secure the device onto a reference board when the sliding member slides upon clamping of the reference-clamp and the filler-clipping-surface; and the filler-clamp are configured to releasably secure a filler board onto the filler-resting-surface upon clamping of the filler-clamp.