[Shop-talk] Levelling bookcases

[Mike Lee]

>Here's one for a quiet Saturday. I'm installing a couple of walls'  
>worth of Ikea bookcases. They will sit on an 80 year old hardwood  
>floor which is no longer close to level. I need something that will  
>"disappear" under the doubled up 1x supports of the bookcases.  
>Softwood shims are too soft and are wider than what they need to  
>support. Any idea what would work here? Thin hardwood shims would be  
>ideal but I've never seen them.

I have purchased both plastic and "composite" (plastic mixed with wood fiber) 
shims at Home Depot; those may work for you...