Multi-purpose table, weight support

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Forum topic by oldskeetshooter posted 10-20-2017 12:22 PM 546 views 0 times favorited 2 replies Add to Favorites Watch
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2 posts in 900 days

10-20-2017 12:22 PM

Topic tags/keywords: router table caster support

I’ve been “casing” this site for a few months now, but have not posted anything. I have decided to get back into some woodworking. Seems there is a virtual cornucopia of great info to be gleaned from this site and my questions have been answered with a simple search. I hope that ya’ll don’t mind a first post being a question.

I am starting a new project, that being a pseudo multi-purpose cabinet/table. The top will be, basically, a router top. The dimensions will be 32” X 53”. I have decided to make it out of 2 thicknesses of 3/4” MDF framed in maple. The reason for the 53” length is the Incra 27” LS system that I picked up at an estate sale.I will be using a Jessem Master-lift II and Bosch router. I am considering building other tops to “slide” down over the router top. Possible for an assembly table. I could build 2 tables but space prevents it. Seems, over the years, my basement has become full of metal working machines as well as my woodworking stuff.

The cabinet, itself, will be 28” X 49” with drawers and doors. I want strength, to support the weight, so the cabinet box will be buildt from Baltic Birch, with maple face frame for the doors and drawers. Due to my limited space, I would like for the unit to have casters. With such a long span, on 4 casters, I have a concern for sag in the middle of the cabinet. I will have enough BB dividers to prevent the MDF top from sagging. My question is: What can I do to support the bottom so the weight will be distributed to the casters. I had considered mounting the casters on a thick maple frame, but I really don’t know how thick. Another idea was to build a torsion box, type, bottom but this would take up considerable storage space.

Wha-da-ya-think? Any advice will be greatly appreciated.

2 replies so far

View JBrow's profile


1368 posts in 1531 days

#1 posted 11-05-2017 02:01 AM


If the cabinet box has ¾” thick plywood sides, back and bottom with a maple face frame, I would think mounting heavy duty locking castors (with a high load rating) on each corner as close to the corners as possible would provide good support. Since it may be used as an assembly table, it might be a good idea to incorporate a fixed mid-shelf joined to the sides, back and face frame in an effort to prevent the plywood from bowing under an especially heavy load.

Center support castors could also be added, but keeping the cabinet from rocking on a basement concrete floor with five or six castors could be a problem.

View Lazyman's profile


4551 posts in 1999 days

#2 posted 11-05-2017 02:29 AM

If you think about how a large dining table is built, you should be fine. A 6’ span is not uncommon with only aprons to support the top between 4 legs and yours is only 49” between the corners. Just make sure that the top has 3-4” “aprons” supporting the top over the doors and it should be plenty strong.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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