Hello Clive. A very interesting build indeed. Never easy to achieve an aligned hole circle. So many variables to contend with, especially the dreaded backlash. Looking forward to the next instalment. 👏👏👍😀
I suppose it wasn't easily corrected otherwise you would have fixed it. In a subsequent video in this series poor adjustment of the cross-slide results in a dig in - but, in my case, it was easily corrected.
Hi Clive, I use Iscar and Kenna metal parting blades and inserts,fortunately my lathe is rigid enough so parting off is not a problem. Are you using a Mercer DTI? I crashed mine and damaged one of the stylus bearings, 3mm OD, 1mm ID, 1MM thick, managed to buy online, wonder how they make them, barely see them with naked eye.
Hello Willem. Thanks for your comment. I thought about going for parting inserts but wanted to first get experience with straightforward turning. Perhaps later. In this video I used a Linear DTI but on my DTI holder for use with the mill I use a small Mercer. I can imagine the insides are very delicate.
Is this necessary? I am not taking the p155, it's that I am thinking of making a new cross slide for my Chinese 9x20, with sufficient depth to take a ball screw, and had assumed that the cross slide surface would not require the same kind of precision as the ways. Should I consider scraping the new slide?
I assume you are referring to the cross-slide ways and not the top surface (as I worked on). I reckon that scraping of machined cross-slide ways should only be necessary to ensure that you have a consistent fit over the full length of travel. It may not be necessary. I only scraped the top surface because I didn't want the tool post to distort the cross-slide when booted down.
Good point! I don't yet have a fly cutter but I do have a face cutter. However, I reckoned I had more room to shift the clamps on the shaper than on the mill.
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Always enjoy your videos … thanks for taking the time. Parting off often causes issues … so great topic.
Thanks for your feedback! Always helpful.
Hello Clive. A very interesting build indeed. Never easy to achieve an aligned hole circle. So many variables to contend with, especially the dreaded backlash. Looking forward to the next instalment. 👏👏👍😀
Thank you, Andrew. Yes, for the mating part I reverted to using a rotary table on the pillar drill.
Winky's Wotksop did a great one.
Thanks, will take a look.
I made a rear tool post for my small lathe too. It works, but it's not really a win. The problem is in the saddle.
I suppose it wasn't easily corrected otherwise you would have fixed it. In a subsequent video in this series poor adjustment of the cross-slide results in a dig in - but, in my case, it was easily corrected.
Hi Clive, I use Iscar and Kenna metal parting blades and inserts,fortunately my lathe is rigid enough so parting off is not a problem.
Are you using a Mercer DTI?
I crashed mine and damaged one of the stylus bearings, 3mm OD, 1mm ID, 1MM thick, managed to buy online, wonder how they make them, barely see them with naked eye.
Hello Willem. Thanks for your comment. I thought about going for parting inserts but wanted to first get experience with straightforward turning. Perhaps later.
In this video I used a Linear DTI but on my DTI holder for use with the mill I use a small Mercer. I can imagine the insides are very delicate.
❤❤❤
شکریہ!
Is this necessary?
I am not taking the p155, it's that I am thinking of making a new cross slide for my Chinese 9x20, with sufficient depth to take a ball screw, and had assumed that the cross slide surface would not require the same kind of precision as the ways. Should I consider scraping the new slide?
I assume you are referring to the cross-slide ways and not the top surface (as I worked on). I reckon that scraping of machined cross-slide ways should only be necessary to ensure that you have a consistent fit over the full length of travel. It may not be necessary. I only scraped the top surface because I didn't want the tool post to distort the cross-slide when booted down.
Why not use a fly cutter to surface the plate? Less labor and less time.
Good point! I don't yet have a fly cutter but I do have a face cutter. However, I reckoned I had more room to shift the clamps on the shaper than on the mill.