I am looking for advice on routing for an upcoming project. I just bought a freud lock miter bit to create a lock miter joint on the edge of some 5/8" thick spanish cedar for a humidor i am making. The bit is 2 11/64" wide with a 1/2" shank. What sort of power is the router going to need to turn such a bit, and what features should the table have for this kind of operation (how big should the hole be in the table, does it matter if it is a split fence or singe piece fence, can i get a simple cheap craftsman table top model). Im really just looking for advice on this because my routing experience consists of some free hand work with a 1/2" round over bit.
Hi Chris - Welcome to the forum
I see from your profile you are just jumping in on this.
With the lock mitre, you run one piece flat on the table and the other on edge. I prefer a split fence but it is best if you have a zero clearance insert for it. The problem with the lock mitre is you have very little edge to guide against once the stock passes the bit as the bit just leaves a razor edge. Many will attach a second piece of stock to the workpiece with double face tape to allow for a guide edge. Obviously the hole in the table needs to be large enough to accomodate the bit, in this case, >2 11/64". As far as power goes, the bigger the better. A 2 1/4 will do fine, just take several passes. I set the fence up for the full depth of cut and put stop blocks behind the fence. I then move the fence forward to make a shallow cut and then move the fence back a bit at a time after each pass until I come up against the stop blocks. Sears has a pretty good router package for around $130 that several members have and seem to like.
Probably the biggest issue, to me, with the lock mitre is making sure the stock is dead flat and of equal size. Access to a planner or thicknesser is a big asset.
I doubt this has covered anywhere near everything. I'm sure some other members will drop in and if you have any more questions, someone is always here.
Edit - here is a link to a video demonstration on how to do this thing. The setup blocks shown are a good idea but not absolutely neccessary. Since you are using 5/8" stock, bit height will need to be tweaked a bit anyway as their setup blocks are for 3/4 or 1/2". Yes, 1/16" is a big deal. They also don't even mention the importance of the stock being sized correctly, that is "assumed". Good Luck http://mlcswoodworking.com/shopsite_...r_video_anchor