Project Bar Stock Steam Engine
#33
The next part on this project was the Crank. This part could have easily been machined out of a piece of 2” round cold roll. But I didn’t want to have the cold roll finish on the outside of the part. I wanted to have a nice machined finish. So I started out with a piece of 3” cold roll. This gave me the opportunity to use my rotary table for the first time. 

Started out by facing the material to the proper thickness.
   
   

Then I drilled and taped the hole for the set screw.
   

I them put it back in the lathe and drilled and reamed the centre hole to .500
   

Once that was done I set up the rotary table and set the part up to cut the two notches out.
   
   
   

Then the struggle to figure out a good clamping method was on. I did have the part move on me a couple times. Luckily it moved away from the cutter. But I was able to come up with a secure way of holding the part to the rotary table. This allowed me to cut the 2” OD.
   
   
   

Once that was all done I was left with the general shape of the crank. I just needed to round off the corners at this point.
   

To round off the corners I was planning on doing it with the rotary table, but decided after talking with Tom G, that was a lot of set up for such a small part. So I decided to pick myself up a 1/4” corner rounding end mill.
   
   
   

Trevor
Lathe - Craftex CX701, Mill - Craftex B30 Mill/Drill, DRO - blu-DRO
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Messages In This Thread
Bar Stock Steam Engine - by Cross Slide - 03-14-2021, 06:30 PM
RE: Bar Stock Steam Engine - by TomG - 03-14-2021, 07:49 PM
RE: Bar Stock Steam Engine - by Pete O - 03-15-2021, 01:08 AM
RE: Bar Stock Steam Engine - by Clifford B. - 03-15-2021, 02:07 PM
RE: Bar Stock Steam Engine - by Cross Slide - 04-04-2021, 12:02 AM
RE: Bar Stock Steam Engine - by TomG - 04-04-2021, 08:07 AM
RE: Bar Stock Steam Engine - by Highpower - 04-04-2021, 10:19 AM
RE: Bar Stock Steam Engine - by EdK - 04-04-2021, 11:46 AM
RE: Bar Stock Steam Engine - by Cross Slide - 04-10-2021, 06:41 PM
RE: Bar Stock Steam Engine - by Highpower - 04-10-2021, 10:08 PM
RE: Bar Stock Steam Engine - by Cross Slide - 04-10-2021, 10:42 PM
RE: Bar Stock Steam Engine - by Highpower - 04-11-2021, 11:52 AM
RE: Bar Stock Steam Engine - by Cross Slide - 05-01-2021, 08:41 PM
RE: Bar Stock Steam Engine - by Cross Slide - 05-01-2021, 09:02 PM
RE: Bar Stock Steam Engine - by Cross Slide - 05-01-2021, 09:09 PM
RE: Bar Stock Steam Engine - by TomG - 05-01-2021, 09:26 PM
RE: Bar Stock Steam Engine - by EdK - 05-01-2021, 10:00 PM
RE: Bar Stock Steam Engine - by rleete - 05-03-2021, 06:54 AM
RE: Bar Stock Steam Engine - by Cross Slide - 05-16-2021, 09:39 PM
RE: Bar Stock Steam Engine - by TomG - 05-17-2021, 08:39 AM
RE: Bar Stock Steam Engine - by Cross Slide - 05-17-2021, 06:38 PM
RE: Bar Stock Steam Engine - by Cross Slide - 12-05-2021, 12:38 AM
RE: Bar Stock Steam Engine - by Cross Slide - 12-13-2021, 08:10 PM
RE: Bar Stock Steam Engine - by JScott - 12-13-2021, 08:25 PM
RE: Bar Stock Steam Engine - by Cross Slide - 12-13-2021, 08:26 PM
RE: Bar Stock Steam Engine - by EdK - 12-13-2021, 08:51 PM
RE: Bar Stock Steam Engine - by Cross Slide - 12-26-2021, 05:44 PM
RE: Bar Stock Steam Engine - by Cross Slide - 12-26-2021, 05:49 PM
RE: Bar Stock Steam Engine - by Vinny - 12-26-2021, 06:35 PM
RE: Bar Stock Steam Engine - by EdK - 12-26-2021, 07:27 PM
RE: Bar Stock Steam Engine - by Highpower - 12-26-2021, 08:52 PM
RE: Bar Stock Steam Engine - by TomG - 12-27-2021, 08:28 AM
RE: Bar Stock Steam Engine - by Cross Slide - 01-16-2022, 10:09 PM
RE: Bar Stock Steam Engine - by Cross Slide - 01-30-2022, 07:00 PM
RE: Bar Stock Steam Engine - by rleete - 01-31-2022, 07:41 AM
RE: Bar Stock Steam Engine - by Cross Slide - 02-05-2022, 10:35 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-05-2022, 10:42 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-05-2022, 10:49 PM
RE: Bar Stock Steam Engine - by TomG - 02-05-2022, 11:00 PM
RE: Bar Stock Steam Engine - by vtsteam - 02-06-2022, 11:08 AM
RE: Bar Stock Steam Engine - by Dr Stan - 02-06-2022, 11:09 AM
RE: Bar Stock Steam Engine - by Cross Slide - 02-06-2022, 06:43 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-06-2022, 08:53 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-06-2022, 08:58 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-06-2022, 09:00 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-07-2022, 09:40 PM
RE: Bar Stock Steam Engine - by rleete - 02-08-2022, 07:18 AM
RE: Bar Stock Steam Engine - by Cross Slide - 02-15-2022, 09:16 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-15-2022, 09:29 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-15-2022, 09:34 PM
RE: Bar Stock Steam Engine - by TomG - 02-16-2022, 12:09 AM
RE: Bar Stock Steam Engine - by Cross Slide - 02-16-2022, 08:16 AM
RE: Bar Stock Steam Engine - by rleete - 02-16-2022, 11:02 AM
RE: Bar Stock Steam Engine - by vtsteam - 02-16-2022, 11:24 AM
RE: Bar Stock Steam Engine - by Cross Slide - 02-16-2022, 09:36 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-18-2022, 11:34 PM
RE: Bar Stock Steam Engine - by Cross Slide - 02-18-2022, 11:40 PM
RE: Bar Stock Steam Engine - by Highpower - 02-19-2022, 01:12 AM
RE: Bar Stock Steam Engine - by Cross Slide - 03-05-2022, 09:23 PM
RE: Bar Stock Steam Engine - by TomG - 03-05-2022, 09:38 PM
RE: Bar Stock Steam Engine - by Highpower - 03-06-2022, 04:30 PM
RE: Bar Stock Steam Engine - by TomG - 03-06-2022, 05:36 PM
RE: Bar Stock Steam Engine - by Highpower - 03-06-2022, 08:17 PM
RE: Bar Stock Steam Engine - by TomG - 03-06-2022, 08:44 PM
RE: Bar Stock Steam Engine - by Dr Stan - 03-06-2022, 10:39 PM
RE: Bar Stock Steam Engine - by Cross Slide - 11-11-2023, 03:46 PM



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