Quill Assembly drive Screw broken, is it worth Fixing?

[benmcn]

I picked up a an older Shopsmith that had been upgraded over the years. It came with the 520 fence system, a bandsaw,a jointer, strip sander, brand new-still-in-box belt sander, and a bunch of parts left over from upgrading the table and fence system. I noticed that the quill return was a little weak. After a few times using it, it stopped working. After taking it apart I discovered that the drive screw (part #41 /145378) was broken. I see that Shopsmith sells this part for 80 cents. It looks like I will have to drill out the broken screw end. Has anyone had any luck repairing this, or am I better off using it for spare parts and looking for a used quill assembly?

[ERLover]

I take it that holds the spring end stationary? If so you could rtill out the broken one and tap a bit larger.

[oldiron]

If you have another working drill press, you can try drilling out the center of the pin with a cobalt or titanium bit.

You can also drill a new hole in the same line as the old one to install the new pin. That should be a "Press Pin", No threads...

If you don't have the ability to drill out the pin and want to keep the machine original, You can take the shaft to a machine shop.

Otherwise, Look for a replacement quill feed shaft.

Mike

[billmayo]

I had no success installing a new pin in the shaft. Even after removing the old broken pin and installing a new pin. I have dozens of these assemblies laying around so contact me at bill.mayo@verizon.net. Shipping would be most of the expense.

[JPG]

An 'easy out' might get it removed. The center is soft, but the outer surface with twist is hard. Unless it is completely removed, a new screw will not hold. Even then it might not hold. Loctite might help.

Drilling a new hole is possible, but it must be the correct size for the new screw.

I think the proper name for the screw is a 'posidrive' screw

Make that a twist rivet.

[benmcn]

Thanks for all the suggestions.
Love this forum! It is great to have all of you experts!

[jsburger]

An 'easy out' might get it removed. The center is soft, but the outer surface with twist is hard. Unless it is completely removed, a new screw will not hold. Even then it might not hold. Loctite might help.

Drilling a new hole is possible, but it must be the correct size for the new screw.

I think the proper name for the screw is a 'posidrive' screw

Make that a twist rivet.

I believe the proper name is a U-Drive Screw. It is the same fastener used to secure the ID plate on the 10ER. Yes they are very hard. On the 10ER I ground the head off to remove the ID plate and then drove the remaining part through the casting since it was a through hole. Obviously not an option in this case.

[TonyB1649]

I know this is an old problem, according to the shopsmith parts list they charge $4.95 for this part. Doing some home work found this part for $5.00 for 50.
I drilled out the middle of the sheared off "screw"and used a screw extractor to clear out the hole. Drove in a new fastener and it seems to hold fine. I tried putting in a vise and pulling it out and it held fine.
Hope this helps anyone with a similar problem
While a lot of used parts are available for the shopsmith I think this is an inexpensive fix.

[jsburger]

I know this is an old problem, according to the shopsmith parts list they charge $4.95 for this part. Doing some home work found this part for $5.00 for 50.
I drilled out the middle of the sheared off "screw"and used a screw extractor to clear out the hole. Drove in a new fastener and it seems to hold fine. I tried putting in a vise and pulling it out and it held fine.
Hope this helps anyone with a similar problem
While a lot of used parts are available for the shopsmith I think this is an inexpensive fix.

Spam?? Moderator deleted bogus link???

[JPG]

I know this is an old problem, according to the shopsmith parts list they charge $4.95 for this part. Doing some home work found this part for $5.00 for 50.
I drilled out the middle of the sheared off "screw"and used a screw extractor to clear out the hole. Drove in a new fastener and it seems to hold fine. I tried putting in a vise and pulling it out and it held fine.
Hope this helps anyone with a similar problem
While a lot of used parts are available for the shopsmith I think this is an inexpensive fix.

Whadja do with the other 49?