@@Randysshop Have a look at some of the old Suburban Tool grinding videos . They shim the tailstock in there cylindrical grinder to get the required result .
There are so many variables in grinding - from lathe spindle bearing 'noise' , to temperature . . . not to mention any wear conditions / variables within any given setup ! Lapping & honing seem to be the best solutions to getting SUPREME accuracy , yet there are ALWAYS little GREMLINS that make us scratch our heads when CHASING perfection ! 'Max Grant is a WHIZ' in larger scale projects - There are quite a number of incredible machinist / craftsmen that put out fantastic videos ; From "Chris , aka "CLICKSPRING" , to Robin Renzetti , . . . & we can't forget Steven Gotteswinter or This Old Tony ! * Turning JUNK into JEWELS takes a lot of work ! "V" Good video ! * Spring is right around the corner . . .
Randy, you shimmed the tailstock but I strongly suggest that it was the wheel that was not perpendicular to the work. i.e. the grinder spindle was not parallel to the lathe spindle axis / bed. The cross hatch grinding marks look very strange in your video, they should look like very fine scratch marks. Yours seemed to have some type of pattern. Regards from Australia.
Hi Dave. I had mounted an indicator on a bar in the chuck and zeroed the front and rear of the spindle of the tool post grinder before I started grinding. Just looking at the grind on the ends it looks good. I put some Sharpe marker on the end and rubbed it on the surface plate the it is touching all the way across the surface. I did a grind on the end and blued it up, the wheel was only touching at the top, So I put .002 thousands shim under the front of the tailstock ways then touched it again and the wheel was just touching on the bottom but still more on the top. So I added .001 for a total of .003 thousands of shim to the front of the tail stock and it looked like it was touching the same top and bottom. Thanks from snowy Mich. USA
@@Randysshop Thanks for the information. Yes you dialed in the grinder spindle parallel to the lathe axis but I suspect that it was not parallel to the bed, hence you adding shim under the tailstock to compensate. When you get a chance just install the grinder as before and check out of interest if it is parallel to the bed. Regards from Australia.
@@daveticehurst4191 You have to shim the tailstock as they are above centre enough on a new lathe , low on an old lathe to get the required pattern . A completely different animal than doing it in a cylindrical grinder .
Hi Randy, what are the dimensions of your cylinder square? I i tend to make one but I haven’t decided its size yet. As an aside, chasing tenths is difficult. I made an 18” surface grinder spindle a few years ago that had to be within 0.0002 overall. That was a nerve wracking project. Since then I’ve learned a lot so I’m hoping making a square won’t require so much head scratching. Gilles
Fun to watch! I may attempt this. Please move the mic further away. Can hear your mouth noises and breathing the whole vid. This vid could seriously be only 5mins. Edit please. Respectfully,
Good video Rndy..thanks for your time
Thanks.👍
I like that , I’ve got a Wrist pin out of a diesel motor I use , pretty accurate. Thanks
Hi Pat. I have seen people use wrist pins before, I don't know what they were from engine wise. Thanks for watching. 👍
Difficult work, but you did a good job. Thank you for this video
Your welcome.👍
As good result grinding it in a lathe . The criss cross can be more refined with a sharp corner dressed on the wheel . Cheers 👍👍👍
Thanks Max. One end is better than the other Cheers 👍
@@Randysshop Have a look at some of the old Suburban Tool grinding videos . They shim the tailstock in there cylindrical grinder to get the required result .
@@swanvalleymachineshop I will do that. Thanks
If this is the same Randy that does the dirt bike cylinder head journal & rocker repair, would love to see a video on that!
Not him sorry
There are so many variables in grinding - from lathe spindle bearing 'noise' , to temperature . . . not to mention any wear conditions / variables within any given setup ! Lapping & honing seem to be the best solutions to getting SUPREME accuracy , yet there are ALWAYS little GREMLINS that make us scratch our heads when CHASING perfection !
'Max Grant is a WHIZ' in larger scale projects - There are quite a number of incredible machinist / craftsmen that put out fantastic videos ; From "Chris , aka "CLICKSPRING" , to Robin Renzetti , . . . & we can't forget Steven Gotteswinter or This Old Tony ! * Turning JUNK into JEWELS takes a lot of work ! "V" Good video ! * Spring is right around the corner . . .
Thanks George.👍
Randy, you shimmed the tailstock but I strongly suggest that it was the wheel that was not perpendicular to the work. i.e. the grinder spindle was not parallel to the lathe spindle axis / bed. The cross hatch grinding marks look very strange in your video, they should look like very fine scratch marks. Yours seemed to have some type of pattern. Regards from Australia.
Hi Dave. I had mounted an indicator on a bar in the chuck and zeroed the front and rear of the spindle of the tool post grinder before I started grinding. Just looking at the grind on the ends it looks good. I put some Sharpe marker on the end and rubbed it on the surface plate the it is touching all the way across the surface. I did a grind on the end and blued it up, the wheel was only touching at the top, So I put .002 thousands shim under the front of the tailstock ways then touched it again and the wheel was just touching on the bottom but still more on the top. So I added .001 for a total of .003 thousands of shim to the front of the tail stock and it looked like it was touching the same top and bottom. Thanks from snowy Mich. USA
@@Randysshop Thanks for the information. Yes you dialed in the grinder spindle parallel to the lathe axis but I suspect that it was not parallel to the bed, hence you adding shim under the tailstock to compensate. When you get a chance just install the grinder as before and check out of interest if it is parallel to the bed. Regards from Australia.
@@daveticehurst4191 I will do that Dave. Thanks👍
@@daveticehurst4191 You have to shim the tailstock as they are above centre enough on a new lathe , low on an old lathe to get the required pattern . A completely different animal than doing it in a cylindrical grinder .
@ Dave You were spot on Dave, the tail stock end of grinder is .008 thousands higher then the front.
Hi Randy, what are the dimensions of your cylinder square? I i tend to make one but I haven’t decided its size yet. As an aside, chasing tenths is difficult. I made an 18” surface grinder spindle a few years ago that had to be within 0.0002 overall. That was a nerve wracking project. Since then I’ve learned a lot so I’m hoping making a square won’t require so much head scratching. Gilles
Hi the cylinder square is 8" tall and dia. is 2.385. Good luck.👍
@ thanks Randy
Fun to watch! I may attempt this.
Please move the mic further away. Can hear your mouth noises and breathing the whole vid. This vid could seriously be only 5mins. Edit please.
Respectfully,
Are you the guy at the shop in Whitehall ohio?
No Sir. Grand Rapids Mich.
Your dog need to have glasses on....
He is an outlaw, says nope not happening!! LOL
SPEAK!! Geez! This whole thing could've been edited down to about 2 minutes .
Sød hund du har
He is a great dog, Loves being in the shop. Thanks