Help fixing cast iron blade drive on table saw

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Forum topic by Hoowaa posted 01-18-2017 03:52 AM 930 views 0 times favorited 9 replies Add to Favorites Watch
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18 posts in 965 days

01-18-2017 03:52 AM

Topic tags/keywords: cast iron table saw metal crack jb weld repair fix

I recently discovered the main trunion (cast iron part that holds saw motor) on my table saw broke.

Any recommendations on how to repair. I don’t weld and unfortunately, buying a new saw is not an option right now. I either have to fix this one or do without for the next 12 months or so.

I was thinking of re-attaching with JB Weld and then lashing the two parts with wire or metal (as indicated by the red lines on the last two pictures).

9 replies so far

View RogR's profile


110 posts in 916 days

#1 posted 01-18-2017 04:40 AM

Have you tried sourcing the replacement part? If not new, then used? If you have access to a torch, you might try Castaloy, but alignment could be critical.

View MrUnix's profile


6824 posts in 2249 days

#2 posted 01-18-2017 04:40 AM

I seriously doubt that JBWeld would hold up, even if you strapped it like you are thinking… You could probably find a local welding shop that will braze it for you cheap, or just buy a new part (searspartsdirect or ereplacementparts both appear to have them available).


-- Brad in FL - In Dog I trust... everything else is questionable

View Hoowaa's profile


18 posts in 965 days

#3 posted 01-18-2017 05:16 AM

Thanks for both suggestions. When the part number wasn’t recognized on the sears webpage I thought I was out of luck. I just placed my order on ereplacementparts.

View splintergroup's profile


2143 posts in 1273 days

#4 posted 01-18-2017 03:38 PM

I agree, just replace it. Welding cast iron properly is a black art and then the alignment will be forever tweaked.

eReplacement parts is a great place, though rather expensive. Do an exhaustive search first, you might save a few bucks.

View CC68's profile


8 posts in 2071 days

#5 posted 01-20-2017 03:37 AM

wow that sucks!!!!!!! this is what i would do i would contacted the company wow made it and see if it has a recall on it. that should not of broke there is not enough torch on that to break it like that! good luck!!

View Mark Shymanski's profile

Mark Shymanski

5621 posts in 3763 days

#6 posted 02-19-2017 01:03 AM

How did the replacement go?

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

View corelz125's profile


448 posts in 1027 days

#7 posted 02-19-2017 03:42 AM

I have the same saw and had the same problem. just that when i took it out of the box it was broke so it was covered under the warranty just had to wait weeks for the part to come from china.

View Hoowaa's profile


18 posts in 965 days

#8 posted 05-16-2017 03:56 AM

I finally had some time to replace the part. Everything appears to be working properly. Thanks for all the tips and suggestions.

View corelz125's profile


448 posts in 1027 days

#9 posted 05-17-2017 12:41 AM

is your belt good and tight on it now?

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