|Project by Mark55||posted 10-07-2014 03:11 PM||3928 views||7 times favorited||9 comments|
This is my latest creation. It is long past due. I have been using a real crude router table I threw together a few years ago. As in many of my projects I wait for the parts to come together to avoid high costs.
The top on this is 1.25” thick clear lexan bullet resistant glass. It was salvaged from a convenience store that was torn down. The piece I used was too scratched up to use for much anything else and I am sure it will get scratched more but the surface is hard flat and smooth. The frame is laminated plywood half lapped and glued together on the joints.
I made many parts on the machine from HDPC plastic. I buy it from a local manufacture as scrap they cant use. This is great stuff for building machines, it cuts and machines very well.
In playing with building machines the last few years I found that wood on wood slides are not practical if you want accuracy and durability. Humidity can make it tight one day and loose days later. I have also used bushings on rods but I find that although they are smooth the clearance needed for them to slide can translate into looseness at the router bit.
So what I developed was, I used 6 roller bearings running in a grove under pressure, 3 on each side. This works very well. It is smooth and there is no play what so ever at the bit. It is driven by threaded rod with bevel gears I got from etrailer.com.
The plunge is foot operated and is a separate mechanism than the router lift crank itself.
If you can view the video things are explained in more detail.
-- Mark, Newton, NC. www.routermillwoodworks.weebly.com