LumberJocks

Gear stripped

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by oldwodie posted 08-30-2017 06:45 PM 293 views 0 times favorited 5 replies Add to Favorites Watch
View oldwodie's profile

oldwodie

3 posts in 455 days


08-30-2017 06:45 PM

old Powermatic cabinet saw has two teeth stripped at 90 degrees. How would you repair it? I thought about drilling, tapping and inserting two bolts, cut them, then file them to match the other teeth. What would you do? Thanks!

Old Woodie


5 replies so far

View MrUnix's profile

MrUnix

5793 posts in 1977 days


#1 posted 08-30-2017 07:12 PM

Post a picture of what you got… lots of ways to repair threads. Easiest way is to weld up the area and then grind it down to the profile needed. Depending on what part you are trying to fix, it might just be easier (and maybe cheaper) to get a replacement part (ie: look around the BOYD section over at OWWM, or on the bay).

Cheers,
Brad

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

View MrRon's profile

MrRon

4345 posts in 3021 days


#2 posted 08-30-2017 09:05 PM


old Powermatic cabinet saw has two teeth stripped at 90 degrees. How would you repair it? I thought about drilling, tapping and inserting two bolts, cut them, then file them to match the other teeth. What would you do? Thanks!

Old Woodie

- oldwodie


That is precisely what I would do. Some have repaired stripped gears on a lathe by drilling and tapping for set screws followed by a buildup of an epoxy, like JB weld, followed by filing to match other teeth. It seems to work well and it retains it’s strength, but you must make sure the area is clean and the epoxy sets up long enough. The strength of the epoxy increases over time, so don’t rush it. Check the following message for a detailed way of repairing a broken tooth.

https://groups.yahoo.com/neo/groups/Sheldonlathe/conversations/messages/21203

View Woodmaster1's profile

Woodmaster1

823 posts in 2365 days


#3 posted 08-30-2017 10:00 PM

I had a powermatic at the school where I taught with teeth missing on the trunion and they had it welded. Your know that is cast iron so you need someone who can weld it. A replacement depending on its age may be hard to come by. I got a replacement and it was not the same that is why we had it welded.

View Loren's profile

Loren

9411 posts in 3426 days


#4 posted 08-30-2017 10:04 PM

I think you could do something like brazing
brass rod to the cast iron, then filing it to
the shape of the teeth.

The approach with epoxy sounds pretty easy
though… I guess just put in some metal
pins to anchor the epoxy and sculpt the
shape you need.

The Practical Machinest forum is one of the
better places to look for answers for this
sort of question.

View TungOil's profile

TungOil

661 posts in 273 days


#5 posted 08-30-2017 10:43 PM

If it were mine, my next phone call would be to Powermatic tech support. They have good folks there and a pretty good supply of parts for the older machines as well. eReplacement Parts also carries a lot of Powermatic parts.

If that didn’t work out the most durable repair will be as Brad said- find a really good welder to build up the repair then grind the profile back carefully.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com