Scribing a farmhouse sink

[Randall Frey]

Hey all, Redoing our kitchen and am looking for a good method to accurately scribe an apron front farmhouse sink into a new cherry ply sink base cabinet. It's a Rohl fireclay sink which by nature of manufacture is slightly irregular. I have seen some posts elsewhere that describe laying this heavy beast onto some cardboard and then using the impression it makes for a template. Also looking for the cleanest method (chip free) for the cut out. This is an expensive base cabinet, want to get it right the 1st time. Anyone done one of these? Thanks

[David DeCristoforo]

Make a template out of 1/4" thick material. Once you get the fit right, rough cut the cabinet, clamp the template in place and finish it up with router and a flush trim bit.

[Rob Woodman]

I usually just shim the bottom to take out any rocking then silicone/caulk the face edge.
If you really need to scallop out the unit try rubbing a soft pencil over the sink base, the graphite will transfer to the wood where it touches, shim it level first and leave shims in place when doing this.

HTH, Rob.