I am looking for a simple way of making large mortices (4" sq oak beams) with confidence
Al
Al
al_yrpal
Greetings Al and welcome to the router forum. I've not done that, but others have and will be along to help I am sure.
Hi Al
You can use a fixture below on your drill press that will do a 1" one or bigger..by just adjusting the stock around a little bit...
I used it that way to make a work bench out of some 4" x 6" beams.
http://grizzly.com/products/1-Premium-Mortising-Chisel/T10022
http://grizzly.com/products/Mortising-Attachment-Kit/H7789
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You can use a fixture below on your drill press that will do a 1" one or bigger..by just adjusting the stock around a little bit...
I used it that way to make a work bench out of some 4" x 6" beams.
http://grizzly.com/products/1-Premium-Mortising-Chisel/T10022
http://grizzly.com/products/Mortising-Attachment-Kit/H7789
========
Attachments
There are three basic approaches:
1. make or purchase a mortising jig that is oriented to using a plunge router with guide bushings for most of the work, and then clean the corners with a chisel (or, round the corners of the tenon to fit),
2. use a mortising machine or drill-press attachment (these typically cut relatively small, standard sized mortises (3/8", 1/2", 5/8", etc.) in stock of any width), or
3. mark the piece and cut them by hand with mortise and regular bench chisels.
Methods #1 and #2 are pretty straightforward, with the accuracy of the machine technique providing the confidence level. Method #3 requires more skill to keep the cheeks of the mortise square, and the confidence results from practice.
1. make or purchase a mortising jig that is oriented to using a plunge router with guide bushings for most of the work, and then clean the corners with a chisel (or, round the corners of the tenon to fit),
2. use a mortising machine or drill-press attachment (these typically cut relatively small, standard sized mortises (3/8", 1/2", 5/8", etc.) in stock of any width), or
3. mark the piece and cut them by hand with mortise and regular bench chisels.
Methods #1 and #2 are pretty straightforward, with the accuracy of the machine technique providing the confidence level. Method #3 requires more skill to keep the cheeks of the mortise square, and the confidence results from practice.
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