Broken screw

[TomG]

As an FYI, the Consew part number is B140553. I'm waiting to hear if my local dealer has any in stock. Fingers crossed.

 

[TomG]

On 10/14/2019 at 12:35 PM, Wizcrafts said:

I could use a couple of those!

I just picked up 2. I got home and tried to remove the old screw and wound up buggering the hole.
So, I am going to have to replace the needle bar.
If the bar I buy comes with one already, I'll be glad to mail you the 2 extras.
I'll let you know.

 

[Frodo]

drill the broken screw nout 

On 10/11/2019 at 9:02 PM, TomG said:

I was tightening the screw that holds the needle in the bar and the head broke off. Inswear I wasn't cranking down on it. 

But the screw is now recessed in the hole.

I am afraid that the screw is too small for standard extractors.

Suggestions?

you need to break out the dremal tool with an abrasive cut off  wheel,,,run the dremal and wear the abrasive  wheel down  on a piece of metal,to the size you feel is small enough for the task

very carefully, cut groove in the busted screw,  

then use  small screw driver in the groove to back the screw out

[TomG]

7 hours ago, Frodo said:

drill the broken screw nout 

you need to break out the dremal tool with an abrasive cut off  wheel,,,run the dremal and wear the abrasive  wheel down  on a piece of metal,to the size you feel is small enough for the task

very carefully, cut groove in the busted screw,  

then use  small screw driver in the groove to back the screw out

Thanks, but it broke off too far into the hole. I did drill it out, but slipped and damaged the threads. So, Iml replacing the bar.

[Frodo]

26 minutes ago, TomG said:

Thanks, but it broke off too far into the hole. I did drill it out, but slipped and damaged the threads. So, Iml replacing the bar.

can you drill a hole same size as screw then retap one size larger, use a different screw?

[TomG]

39 minutes ago, Frodo said:

can you drill a hole same size as screw then retap one size larger, use a different screw?

I suppose I could, but I would either have to drill all the way through the original hole, or buy a bottoming tap in the small size I'd need. I'd still have to pull the bar to do this. It's just easier to replace with new and not have an oddball machine .
But, I appreciate the idea.
 

[CowboyBob]

1 hour ago, Frodo said:

tcan you drill a hole same size as screw then retap one size larger, use a different screw?

The bar is made of chrome steel you'd never be able to tap it, we sell the bars new for $10.00.

Edited October 17, 2019 by CowboyBob

[SolarLeatherMachines]

For future reference, it's possible to use a small, thin cutting disc on a dremel, and cut ACROSS the screw hole.  Then cut down into the bar and into the broken screw, creating a flat head screwdriver slot.  You should be able to then use a small screw driver to turn it out.  The existing threads are minimally affected and still work well.  The cuts across the rod are minimal, and don't really weaken a steel bar that has a tensile strength of 57,300 psi.  Obviously, this is a last option...but it's still an option.  

[Frodo]

1 hour ago, CowboyBob said:

The bar is made of chrome steel you'd never be able to tap it, we sell the bars new for $10.00.

10 bucks?

LOL  not worth buying a tap and bit they would cost 20

 

[nylonRigging]

8 hours ago, Frodo said:

10 bucks?

LOL  not worth buying a tap and bit they would cost 20

This what he said ....LOL .  You also pay more for shipping cost than new rod cost , & That exactly what I did on last needle screw that snapped ragged edge and was a NoGo on thread-out . it not that hard to remove and drop new fresh rod in .

.