have not heard of it being used, but I suppose it could be OK ... I use Timbermate for woodworking and find it excellent - mind you, we used it on our fence - DO NOT USE FOR EXTERIOR WORK!!!!!!
Experience is what you have when you apply knowledge and bugger something up - so I am now an experienced Timbermate user ..... can't hurt to try the cornice adhesive if someone you trust has done so with success
.... and to be terribly pedantic - putty isnt filler and filler isnt putty![]()