Michael Gilligan | 01/03/2017 11:42:15 |
![]() 23121 forum posts 1360 photos | Posted by stephen goodbody on 28/02/2017 21:21:24:
Hello Ken, My George Adams round-bed lathe has this toolpost system - I've been using it for nearly 40 years and wouldn't change it for the world. . Hopefully ... Steve [who has been happily using his ^^^] and/or Ken [who, I think, has recently purchased his] will be able to give a first-hand assessment. I may be in a minority-of-one but, I think this would make an interesting article for MEW. MichaelG. |
stephen goodbody | 01/03/2017 14:14:08 |
74 forum posts 43 photos | Toolposts, boilers and stainless frames all in one thread. Quite the development! Looking back, my apologies for repeating the same information as others (patent number and Twin Sisters). I should have properly read all of the posts before adding my own. Regarding my experiences with the Burnerd, unfortunately I really can't compare it with other small lathe toolposts as this is the only one I've ever used. I can confirm that I've never had a problem with the toolpost rotating of its own accord however. There's a nut (probably 1/2" BSF, but I'd need to check) that tightens the center bolt into the T-slot, this is more than capable of stopping the post from rotating. All that the ball-ended handle does is to clamp the toolholders within the post, it does not clamp the post to the top slide. Regarding the grub screws in the toolholders themselves, these are 2BA and keep the tools in place without problem in my experience. They also allow the tool tip height to be adjusted. As with all grub screws, the Allen key hexagons in the top ones tend to clog with swarf but can be easily cleaned out or replaced with cheesehead screws (which is what I've done in a few cases). Regarding tool height adjustment, it's important to remember that my lathe is a round-bed and hence most of my adjustment is most easily done by rotating the saddle around the bed. Hence I really don't use the grub screws for height adjustment except when initially putting a new tool into a holder. I have a decent selection of toolholders, but unfortunately managed to break one of my boring tool holders a few years ago when inserting a tool. A fatigue crack had evidently developed at the bottom corner of the tool slot. It could be mended, but fortunately I have another and so have not had the need so far. That will be a project for some future time, I'm sure. It's important to remember that my lathe use is hobby only, and I'm one of those people who would rather use what they've got rather than buy new. I get a perverse satisfaction out of using old tools (my lathe is over a hundred years old, after all!) and have often found that new tools are better in some ways and worse in others than the ones they've replaced. However, after nearly 40 years using the same equipment I probably know the limitations (mine and the tool's) and feel sure that those limitations are likely more than would be the case for most others I've recently made a new set of injector cones (very fine tolerance work) and last weekend was taper-turning and taper-boring some 6-inch lengths of 2.5 inch steel pipe for a traction engine chimney, so for me the lathe and tooling works just fine. Best regards
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Michael Gilligan | 01/03/2017 14:18:46 |
![]() 23121 forum posts 1360 photos | Many thanks for that, Steve MichaelG. |
JasonB | 01/03/2017 15:23:37 |
![]() 25215 forum posts 3105 photos 1 articles | Yes thanks Steve. It does raise as many questions as answers but I think I will leave it there. |
bricky | 01/03/2017 16:01:01 |
627 forum posts 72 photos | I saw one of these years ago and set about designing my own to fit my Myford.My tool holders do not have screw adjustment,this is the only draw back to my design,but having packed tools to height for years it is not much of a trial as if using tipped tools you only do it once.I find mine quicker than my Dickson type ,the advantage of mine is that the holder is clamped directly onto the topslide and it's low profile with only the clamping nut in the way I find it very usable.It can be made to fit larger lathes than the Myford but a bit more thought might be needed for smaller centre height.My design is in my album . Frank |
JasonB | 01/03/2017 16:20:06 |
![]() 25215 forum posts 3105 photos 1 articles | Thats interesting Bricky, your design does seem to have overcome most of the shortcummings that I could see with the original design: - Tool holders do not overhang the sides of the base - Toolholders fully supported below -Tool bits sitting on a solid base not on two grub screws - Decent number of holders which makes toiol mounting less of an issue as you can have one holder for each bit This does compensate for lack of toolheight adjustment as you only need do it once. - Good length of slot so you don'y have to use short toolbits J |
Ken Weeks | 01/03/2017 20:48:10 |
![]() 132 forum posts 36 photos | EdH I have sent you a private message Ken Edited By Ken Weeks on 01/03/2017 20:48:59 |
bricky | 02/03/2017 08:44:30 |
627 forum posts 72 photos | Thanks for the appraisal of my tool post Jason.I thought that the original had potential but was lacking in some areas,Placing a tool on two adjusting screws was asking for tool flexing apart from the overhang to allow for adjustment.Chatter was what I thought would occur .My toolpost would not fit on my B type drummond as the topslide is to high although the centre height is the same as the Myford,that is why I am not sure about it's suitability for small lathes as I have no Knowledge of them, it would scale up to larger sizes though. Frank |
Ken Weeks | 09/03/2017 22:04:08 |
![]() 132 forum posts 36 photos | Stephen Goodbody Could contact me on <email removed to prevent spamming> Edited By Ken Weeks on 09/03/2017 22:04:28 Edited By Neil Wyatt on 10/03/2017 08:46:17 |
stephen goodbody | 09/03/2017 22:56:40 |
74 forum posts 43 photos | Email sent Ken. Let me know how I can help. |
Neil Wyatt | 10/03/2017 08:48:01 |
![]() 19226 forum posts 749 photos 86 articles | I suggest using the PM system to share email addresses, if you leave them up here you will get spammed. Neil |
Ken Weeks | 10/03/2017 10:14:36 |
![]() 132 forum posts 36 photos | Hi Neil Thank you for the post. I will remember it in future. Ken |
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