Shopsmith Forums

I’m very seriously considering getting the 3 inch SS caster upgrade, but I just want some input from those who have done it already. Any issues on installation? Was it worth it?

This is a subject that has been discussed before in other threads.

I have the 3" Caster Upgrade on my Mark 7 and have the 3" Casters for my Mark V but haven't put them on yet. I do like them. I will put the 3" Casters on my Mark V when I get a chance. So many things to do that take priority over that task.

The one problem that I know of is putting the 3" Casters on the older Retractable Caster Assembly. The older set has the foot pedal wheel closer to the Cam and apparently hits the Casters when raising or lowering. I know of one owner that has trimmed the foot pedal wheel to clear the Casters. I have not tried the 3" Castors on an older Retractable Castor Assembly to see how much interference there is.

Below is the early Retractable Caster Assembly.
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Below is the later/current Retractable Caster Assembly. note the location difference of the foot pedal.

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I did the upgrade and it was worth it for me. It does require some sheet metal drilling but I do not recall much trouble with it. The big urethane tires are much smoother rolling.

I use my Mark V outdoors, outside the garage, and must wheel it in and out over very irregular surfaces. So for my situation it was worth it. Others here have expressed that unless the SS needs to be moved often, it may not be worth it. Also some reports of tire delamination, but mine have not delaminated.

I later had some trouble with the legs - see this thread: viewtopic.php?p=292231#p292231
I would recommend that if you add the larger casters you also add the allthread stretcher to beef up the legs to avoid the popout problem I had with the caster elevation mechanism.

I am happy with mine. They roll easier and also change direction much easier than the standard version. Scott at MyGrowthRings is not a fan, IIUC his main issue is that it is harder to get to the foot control with a tool shelf installed. I don't use the tool shelf, so that is a non-issue to me. The larger wheels roll over small debris, etc. easier than the smaller ones. They do not lift the machine any higher when down. The heavier the machine, the more improvement from what I've experienced. Some people rarely move their machines, so it's not a priority for them. I had a Mark for many years with no casters, didn't know what I was missing.

- David

I also highly recommend the Shopsmith upgrade casters. For me, in my shop, 3" casters are a minimum and I won't consider any tool/cabinet, etc. that doesn't have at least 3" casters. I have a concrete floor in my garage and expansion joints are a PIA, but 3" casters make it bearable to roll over them. If you have a floor jack that is the absolute best method that I know of for changing them. Don't follow the instructions from Shopsmith of turning the Mark V upside down to change the wheels. I mean if you had any other brand cabinet tablesaw or lathe or etc. would you want to flip that machine over risking alignment issues and/or damage? Then why should I flip my expensive Mark V 520 over??? With a floor jack it is very easy to do the caster upgrade IMHO and without flipping the machine over. I showed a pic of it at the link below:

viewtopic.php?p=276062#p276062

One word YES

Jack