Member postings for Dell

Thanks once again for replies my Pultra is the 17/70 according to the manual that I have and someone has posted above it goes round the bearings then down a hole to oil and to be careful not to sever them.

Dell

Thanks for replying everyone Joseph Noci 1 I understand the wicks go round the bearings then down a hole to the oil , in that case would not the wire in a pipe cleaner damage the spindle?

Dell

I need some replacement oil wicks for my Pultra does anyone know of a place/ supplier that sells such a thing , I have been told that lighter wicks would work but I don’t want to strip the headstock until I am sure I have suitable replacement, has anyone got a picture of said wicks.

thanks in advance Dell

A friend sent me a metric crosslide for my Pultra 17/70 because I have trouble with my hands and the handles are bigger than my current crosslide , although I do most of my turning with a graver it's always useful to have a crosslide, and as I do most of my measurements in metric it's a pain for an old man to keep converting back and forth,( well for this old man anyway) , it had some surface rust but not to bad, I totally stripped it down degreased it, removed old paint ( wrong colour) and soaked it in Evaporust for a few hours, there was a few butchered jib adjusting grub screws so as I had to make four anyway I thought I may as well change all of them because trying to hold the grub screw still with a very small screwdriver while tightening the locknut was a pain so I purchased 10 alen socket 1/8"X 1/2" BSW grub screws and turned the end down to match the originals, I also had to repair the end of one of the leadscrews.
I went this morning to where I used to work to paint the parts that needed painting and while I was there I welded the damaged leadscrew, when I got home I turned the welded end down and drilled the hole to hold the handle on.
Although it's all adjusted and Multifix fitted I haven’t tried it yet

Edited By Dell on 25/10/2022 18:13:50

Well the metric leadscrew and nuts arrived the reason for the earlier crosslide only having one single nut is that the leadscrew also screws into the brass part in the centre of the slide, and the later ones don’t hence the 2 part nuts, also the leadscrew nuts on the later metric ones are larger although the are very similar shape, hence the later metric lead screws and nuts won’t fit earlier slides.
Dell

Anniversary clock would be ideal have a look at my website anniversary-clocks.co.uk contact me if interested.

Dell

I have add a photo album for anyone that has a Pultra and made it public so if anyone wants to have a look please do , I found from it that both crosslide leadscrews are identical.

more like this.

Dell

Been doing some mods on my lathe today, because indexing attachments for the Pultra lathe are harder to find than Rocking horse poo, I decided to modify my lathe by removing the remnants of the quick collet closer
( I had taken most of it off anyway because it’s a pain in the proverbial ) , I decided to make everything the same size as the index plate fitting on my rotary table because I couldn’t see the point in buying more indexing plates when I could use the ones I already have , so now I can index the headstock, have vertical milling slide with spindle and a new motor with speed control over head pulleys , I just need to work out how and best place to mount motor and I will be set.

Sorry David

I misunderstood yes the nuts are identical, the screws I have coming have two piece nuts and I think that is a much better idea.

Dell

This is what I have coming hope they fit.

Dell

Looks identical in the picture but until I get it I can’t be sure.

Dell

Hi dave

I can see the logic when the nut is 2 piece but with the 1 piece if they are adjusted up evenly then all you are doing is moving the nut out not taking any slack up unless it’s adjusted at a slight angle, even then it’s not taking slack it’s just making the nut tighter on the thread.

anyway my friend has decided to sell me some metric dials leadscrews and 2 piece nuts so I can convert my on to metric and have bigger handles.

thanks for all the input Dell

Here is an extract from Pultra paperwork it seems they changed the nut to two piece in the 60’s and to metric .

And yes sorry Michael it was for NDIY

Edited By Dell on 07/10/2022 21:41:18

That’s odd my nut is one piece and the dials are different, maybe the difference is yours are metric and my one is imperial.

Well it was definitely 1/4” 40 tpi thread , I opened out the hole to 9/32” I couldn’t go any larger otherwise I was in danger of breaking through to other holes turned a bush up to be a very tight fit using a graver ( I couldn’t use the crosslide) ha , pressed it into hole, drilled hole to 5.5mm ,started tapping and promptly turned the bush out so a rethink was in order, as I already had some silver solder paste I cleaned everything up and smeared a small amount of the paste round the bush pressed it back in and heated until solder flowed that did the trick, finished cutting the thread cleaned everything and put crosslide back together, no play whatsoever.
so now to make a new replacement but what metal to use brass or bronze.
Dell

Good question, although if I can sleeve it I am belt and brasses so a complete new one will make me happier, also I need the repaired one to make a new one using the crosslide,

Hi John

thanks for that but yes to late now but if it is the correct thread then I will order HSS to make a new one.

I have already ordered a couple of taps and a 9/32” end mill as I am going to sleeve it ( the same as when I bush a clock plate and re tap it then if is works I can then make a new one..

thanks Dell

Thanks Michael

Please forgive am oil man

it’s the nut but I understand that both should be changed as a set but if I can find or get a nut made that would be better than nothing, I thought about the D .25 but I would have thought it would have been D .250 and I should have said the the dial is 0 to 25 so 25 thou per revolution , so that points to 1/4” X 40 tpi.

Dell

Edited By Dell on 04/10/2022 18:38:42