Member postings for jamie creighton 1

so following on from my earlier thread i had a go at making some spindle bearings in torlon today.

it seemed to go well and i enjoyed it a lot. heres a video showing rthe run out when the turntable is spinning. what do you guys think? click on the phto to see the vid

Edited By jamie creighton 1 on 07/05/2022 16:20:27

the question is in this day and age are oilites a good choice? modern engineering plastics or lignum vitae wood seem a better choice. im no expert though.

Edited By jamie creighton 1 on 03/05/2022 17:50:03

thanks for all you comments so far

i mentioned earlier that i have a spare spindle,i have cut it at an angle to turn it into a toolmakers reamer,has anyone tried this approach?

also if i do use oilites they will have to be machined as the size is not a off the shelf item. the benefits of using torlon is the improvemnt in sound quality due to less noise in the form of distortion picked up by the the stylus.

there are a few options to think about though so nothing is set in stone.

Mike thats the same as this turntable,the spindle uses 2 bearings and the weight is suppoted by a thrust pad.

bringing an old classic turntable up to date,rare, exotic and top end japanese direct drive, still good by todays standards.. it uses oilites as standard,id like to try and better the tolerances. i have spares so no harm will come to it while i practise. the end goal will be to substitute the oilites for bearing grade torlon.

the plinth i made myself,its panzerholz veneered in cocobolo.

Edited By jamie creighton 1 on 02/05/2022 14:42:43

thanks hopper,yes it for a turntable.

im measuring the spindle with a digital micrometer whic is reading 10.985,is that classed as 11mm norminal?

anyway i believe an h7 11mm reamer is the correct size?

sorry for the dum questions but id like to get this as accurate as possible .

sorry i should have been more clear,the bearings im hoping to make are not for the lathe,the clues in the rpm of the spindle, 33 1/3

hi,yes thats what im going to do first but being new at this i thought the final hole finish should be reamed?

ok,

the spindle measures 10.985mm so im thinking an 11mm h7 reamer work do it? the spindle only turns at 33. 1/3 rpm.

hello all,

id like some information please on the best set up and method for making spindle bearings. i need 2 from bronze .

i have a spare spindle which can be made into a toolmakers reamer and my lathe is a hobbymat md65,i also have the milling machine attachment.

i was thinking of buying a floating reamer head attachment as id like to get a good tolerances.

what do you think? whats the best way forward please?

cheers.

well all i know is it came already mounted on the lathe and as i said previously the original oem one has been put back on

im a great believer in just having a go,you learn from your mistakes,well some people do lol

many thanks fella's,ive ordered a set of hhs tools to get me started and also a small round bar of bronze to have a play with.

just how sharp do the tools need to be? do they require further honing?

not a problem if they do,i still have my wet stones from my cabinet making days,back then i always had a bald patch on my arm as i used the hair to gauge the sharpness lol

Cheers Paul,

I bought a small blank of delrin to have a play at the weekend.

im still not sure what type of tooling to buy, anyone have a link please or a good dealer to buy from please?

thanks,i will put the original one back on.

auto feed is being used and i will try it with both slides locked .

nice one cheers,that makes sense.

could someone link to some good quality tooling i can buy please? ive been looking but there's too much choice,whats best?

good old hss or the ones with throw away cutting tips?

cheers dave for the reply,

i do have the original round tool post,the one in the pic was on it when i bought it,its a quck change type.

the bearings do not appear to have any play,as does the main saddle,the cross feed and tool post gibs were bent out at both ends so i straightened them at work and re adjusted.

what is the larger bolt for in the center on both beds? is that for intially getting the gib strips in the right position?

Edited By jamie creighton 1 on 08/12/2019 14:40:34

so after looking for a while a hobbymat md65 came up for sale 15 miles away,i went to have a look and bought it.it comes with the milling head attachment and lots of extras such as the slow speed wheels,spare 4 and 3 jaw chucks,a box of collets etc.

i spent a few nights after work cleaning it all up as it had been in a shed for a few years,it has come up very well,i also oiled it and adjusted the gib strips.

so today i spent a few hours having a play and just turned down a bit of steel.

in trying to get a good finishing cut and all seems well except every now and again the tool seems to dig in and leave a faint ring mark.

ive tighten up the beds and that seems to have helped but anymore and the beds are too tight to move smoothly.also the lathe is not bolted down.

any thoughts?

yes i know its in the kitchen,being single has its rewards

you can see the air being removed from the bearings so the oil can get into the pours.

many thanks for your replies so far