Cutting threads on larger round rod?

[wallfish 17,232]

9 hours ago, ebinmaine said:

I'm joining two parts. 

 

I have one side that's threaded. And one needs it...

Do they need to line up ?

Like would welding a rod coupler to the side of the solid rod and thread the other one into it?

Or weld the coupler straight on the end?

[Pete D 254]

On 2/27/2025 at 9:32 AM, ebinmaine said:

 

 

Cutting oil I have. Tapering the end of the shaft I can do. Drill press or tapping press, not happening. I don't have any way to hold the material straight other than by eye unless somebody has a different suggestion.

 

I'm late to the party.  How about a couple of homemade V-Blocks attached to the workbench?  EDIT: or even 2x4s with 1" holes in them.

You can drill holes through the V-Blocks above the rod, and insert a couple of pins to hold it in place. I'm not sure how you can hold the tap and turn it while keeping that straight... I haven't thought that far ahead!

 

Is this one of those big ratcheting pipe threaders?

 

EDIT:  DONT turn the tap.  Clamp it in the vice and turn the rod.

Edited Saturday at 02:31 AM by Pete D

[ebinmaine 69,921]

13 hours ago, wallfish said:

Do they need to line up ?

 

Not like to micro specs but yes. Really close. 

 

13 hours ago, wallfish said:

Like would welding a rod coupler to the side of the solid rod and thread the other one into it?

Or weld the coupler straight on the end?

 

I hadn't considered using a straight on connection because of the straight vs threaded rod. 

The threaded piece is actually a long bolt. 

I was going to have a threaded portion at both ends so I could attach to existing one and also add a stopper to prevent the plow frame from dropping over snow banks.  

I certainly could use a bored out piece of 3/4" ID iron pipe as the welded connection. 

[wallfish 17,232]

14 minutes ago, ebinmaine said:

I certainly could use a bored out piece of 3/4" ID iron pipe as the welded connection. 

Maybe cut the bolt and just make it longer with welding on pipe, thick wall tube or the solid rod or even a combination of rod and pipe?

I don't completely understand the assignment

[ebinmaine 69,921]

3 minutes ago, wallfish said:

Maybe cut the bolt and just make it longer with welding on pipe, thick wall tube or the solid rod or even a combination of rod and pipe?

I don't completely understand the assignment

 

You're headed the right way.  

 

I'll get some pics later.  

[JPWH 6,182]

1 hour ago, ebinmaine said:

I certainly could use a bored out piece of 3/4" ID iron pipe as the welded connection. 

I can fix you up with this.