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Designing for strength...a stand for my shopsmith

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Forum topic by Babieca posted 12-06-2015 02:59 PM 483 views 0 times favorited 6 replies Add to Favorites Watch
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Babieca

120 posts in 972 days


12-06-2015 02:59 PM

My first project for the new year will be a mobile stand for the Shopsmith 10 ER I inherited from my grandfather.

I basically want to make a plywood box with drawers and casters for it to sit on, but I’ve never designed for a big hunk of cast iron and steel spinning out-of-round chunks of wet oak. I don’t know the total weight of the machine, but it weighs more than I do. In lathe/sander mode the weight is distributed between the two ends, but in drill press mode it will be all on one side of the box.

The stand will be just over 5 ft long. Will it be strong enough if I make it out of 3/4 ply with the sides set in rabbets and two vertical dividers in dadoes?

Another option would be to make a dovetailed box out of 2x construction lumber with the vertical dividers in dadoes, though I would have to glue up panels to make them wide enough.

Also, will beefy locking casters be stable enough for lathe work, or do you think it will need retractable casters?

I would appreciate any thoughts or suggestions.


6 replies so far

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shipwright

7175 posts in 2266 days


#1 posted 12-06-2015 03:41 PM

Have a look at this one. I’m assuming your SS is a 10ER as the newer (since 1953) ones have integral legs.
http://lumberjocks.com/projects/38909

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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Babieca

120 posts in 972 days


#2 posted 12-06-2015 03:52 PM



Have a look at this one. I m assuming your SS is a 10ER as the newer (since 1953) ones have integral legs.
http://lumberjocks.com/projects/38909

- shipwright

It is beautiful, but it doesn’t really meet my needs.

The machine sat in my uncle’s shed for close to 20 years and the sheet metal legs and casters are in bad shape. Instead of restoring them, I’d like to use the time to build something with storage for all of the accessories. Right now the table, fence, etc just sit on the floor under the bench when not in use.

I get one bay of a two car garage for my shop and storage and mobility are at a premium.

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shipwright

7175 posts in 2266 days


#3 posted 12-06-2015 04:05 PM

Just thought it would give you some idea of the strength of a plywood top as well as a look at dimensions that work in both positions. If you go to the ShopSmith forum and ask you will get lots of help and probably several examples that are more suitable for you.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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Babieca

120 posts in 972 days


#4 posted 12-06-2015 08:38 PM



Just thought it would give you some idea of the strength of a plywood top as well as a look at dimensions that work in both positions. If you go to the ShopSmith forum and ask you will get lots of help and probably several examples that are more suitable for you.

- shipwright

Sorry, I misunderstood. Is that just a single layer of 3/4 plywood with a hardwood edge or is it a double layer?

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JoeinGa

7489 posts in 1475 days


#5 posted 12-06-2015 08:42 PM

Based on the photo that Paul put up, it shows that a big “box” type cabinet will work. Using 3/4” plywood would be plenty strong, and you could put drawers (or cubbies) in which ever way that suits you.

If you’re concerned about all the weight on one end when it’s in drill-press mode, the weight of the cabinet and it’s contents should be enough to counter balance it. I’d make the cabinet wider than the ShopSmith and then slide the SS to the end opposite of the drill press end before bolting it down. And I’d be sure to use a full sheet on the back side of the cabinet to keep everything square.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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shipwright

7175 posts in 2266 days


#6 posted 12-06-2015 10:50 PM

Single layer and the balance is not a problem even as mine is laid out without cabinets.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

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