Thanks for teh advice guys

been watching the M&W on ebay for a while

but just bought a mitutoyo conventional style digital for a good price

Theres always lots of micro 2000's on so i still may take the plunge

Ian

Is a M&W 2000 digital micrometer a better bet than a new far eastern digital mic?

Anyone use one who could comment

Ian

Seeing swarf like that always makes me wonder how those stainless steel pan scourers are made lovely long spirals of swarf with no sharp edges...how are they made?

Ian

I have a mk1 student too and it's the only machine in my shop that I haven't got an inverter or variable speed drive on

I have a 2hp single phase on it and its nice to be able to stop it dead on the handle with the brake.

almost all my other machines (8) run on control techniques drives they are easy to set up and so far I haven't had a failure. They are not the cheapest around about £250 ish for a 1.5 kw one

ian

Thanks for all your replies

I would not consider using scaffold tube far too flimsy and rough surface finish to take the table and be able to move it

I was only wanting an increase in length of about 6-12 inches over what i have available now

Lathejack if you do find an old ram I look forward to hearing from you

Ian

I bought the machine and someone had modified it to a large throat by chopping the column and extending the head out by 24" or so

Ive welded it back together but would really like a longer column a s the startrite has a tall base casting and the head has a 2 speed epicyclic gearbox on it as well so room under the chuck is limited

I'll have to trawl the scrap yards round sheffield for a length...the reason or my post was what sort of steel finish do I need to allow the table to move and clamp well......is bright drawn solid OK or is seamless tube OK or does every type need to be ground to 2 3/4 "

Thanks for that they only want £30 for solid steel (per 12"

would bright drawn be ok? what would the tolerance be on diameter?

any body got any idea where to get some cheaper ( scrap) from?

I need a new length of steel for my startrite pillar drill column 1.5 metres long would be fine

it needs to be 2 3/4 " diameter

any suggestions on where to source such material and will it need grinding to size or will bright drawn be ok wall thickness is 4mm or thereabouts

Ian

Gordon may be refering to the other type of digital micrometer ???

http://i417.photobucket.com/albums/pp251/ianpark1/DSC01150Medium.jpg

I should imagine that there would be a method of removing the counter mechanism and reseting the gear chain

Ian

Edited By Ian Parkin on 15/10/2012 10:46:31

Whilst at school we used to make a screwdriver as a project

we warmed up the screwdriver spindle and forced it into a predrilled hole in a plastic material that was translucent yellow and sometimes it was fluted

we had turned a nice dome on the end and a finger stop groove near the blade and polished it to a high polish

Where could I get some of this material from

was it cellulose acetate butyrate? CAB

seem to remember GPO screwdrivers were made of this too

Ian

Yes perhaps they are lesser grade of steel the steel i can cope with but will the tungsten snap where I want it to? its perhaps 10mm x 1.5 in size on a backing of steel 25mm x 3.5 mm the planer blades want to end up at 310mm long from their existing 400 mm long.

I'm presuming a thin cutting disc wont touch the carbide?

I'm considering buying some tungten carbide tipped planer blades that are too long for my planer...is there any easy way to trim these down?

they are HSS with tips on 1"x 1/8" x 16" long

thinking my tile saw? diamond blade water cooled?

Many thanks for all your replies

as I said I have a small press which is claimed to be a 1 tonne press its small weighs perhaps 6 kg and has a bar perhaps 20cm long ebays full of them

I have a very large one perhaps 75kg weight with a 50cm bar I never used it as I have a large hydraulic one which i use more so I put it up for sale on ebay ( sub sold) It was just a query from a prospective buyer as to what "tonnage" it was ...which made me think what indeed it was.as I can't imagine that the little one I have will ever provide a force of a tonne...looking at ebay ads for new chinese presses one like my big one suggests 5 tonnes for a press of this size

So how do manufacturers measure their tonnage?

I,m selling a large arbour press and someone has asked "what tonnage is it " so how do I calculate the pressure ? I have small one bought from Axminster almost pocket sized and they claim it's a 1 tonne size...what does that mean? My big press the gear is 25 mm radius and bar is 500 long does that mean a 20 fold increase in force applied at the handle ?making say only 2000 kg if you could apply 100 kg force?

so how do the little presses claim 1 tonne

Thanks for all your replies

I know that a 63000 is close but I was more intrigued as to why startrite had used such an unusual bearing

also these seem to be very expensive £6 for a budget and £12 for a brand name

Ian

I have a startrite bandsaw most bearings are imperial sizes

however the blade guide bearings are as follows

marked nachi 10bcs 1nsl

id 10mm (measured on the shaft it fits on)

od 26.1mm ( measured on bearing)

width 11.5 mm

any ideas as to a supplier?

Ian