Routing odd-width housings for veneer MDF

[milkman]

Am considering a bookshelf project using veneered mdf and notice that say, 18mm, is 19mm when its veneered both sides.
How do you rout housings for this? As far as I can tell 19mm cutters aren't available, or do you have to use a 19mm jig and make two passes per housing?

This may be obvious but I'm a doofus when it comes to routing so apologies if its a daft question.

Marko

 

[Oryxdesign]

Use a smaller cutter and take 2 passes

 

[brianhr]

Have a look at Ron Fox's tips on the Wealden web site.
Or this http://www.woodworkersinstitute.com/page.asp?p=344. You will need to calculate the effect of the offset though to get your 19mm.

The best of all in my opinion is that described in Roy Sutton's book and DVD "Jig Making for the Router". I don't have picture of it but something similar has appeared in many books and magazines.

 

[JWF]

If you use a 3/4" cutter you will find that it is 19mm.

John

 

[jimi43]

If I were doing this with MDF I would use 18mm plain MDF and veneer it afterwards.

Just a lateral though!

Jim

 

[BradNaylor]

Use Dominos instead?



But if you must rout housings, Wealden do 19mm cutters;

http://www.wealdentool.com/acatalog/Onl ... k_237.html

Cheers
Brad

 

[Niki]

You can make a jig like this one to use with any diameter (smaller than the dado width) roller guided bit
http://meackerman.com/shop/routerDadoJig.htm

Or the same one but with two fences that the router rides between...in this case any straight bit will do.
http://www.woodmangler.com/Dado%20Jig/Dado%20Jig.html

Regards
niki

 

[JonnyD]

Use Dominos instead?

I always use this method myself now.

Another way is to cut the housing with whatever cutter you have 16 or 18mm etc and then cut a small shoulder on the edge of the veneered mdf using a hand router with a fence or a router table to the depth of the housing. This can be blind or done both sides.

Cheers

Jon