Member postings for Emgee

An alternative method would be to hold the boss in a 4 jaw independent chuck, you could then face the motor mounting plate and bore through to suit the overarm diameter at the same setting. You will no doubt have to dress the casting at the jaw gripping points to ensure the part is secure, The casting will be way out of balance, more so if it's cast iron, so spindle speed will need to be kept to safe limits. DOC and feed rates to suit spindle speed and material.

Which ever way you decide on, chuck or faceplate, you will need a fairly large capacity lathe.

Emgee

Max, check your Inbox for a message.

Emgee

Alan.

I used a slotting head and rotary table on a Victoria mill for a Bantam gear.

Emgee

Duncan, check in my photo album for the dimensioned drawing and other shots of the misting unit I use on a milling machine.

Emgee

Loosen the clamps securing the plate to the packing above the table surface, fit a 5mm rod/drill into the chuck/collet, move table to align rod onto the hole, bring spindle and rod down into the hole. tighten clamps to secure the plate, raise spindle and fit your 7mm drill and drill the larger hole.

Emgee

Duncan beat me to it, must speed up my typing !!!!!!

Edited By Emgee on 10/10/2015 20:36:50

Clare

This link will provide a list of Clubs in various UK towns, perhaps a town close to you is named.

www.modeleng.org/ukclubs.html   (You will have to copy and paste the link into your search bar.)

Emgee

Edited By Emgee on 08/10/2015 11:50:55

Hi Clare

Check local directory to see if you have a local model engineering club, if so contact the secretary or chairman who I'm sure will be able to offer some advice.

There is most likely a member on this forum living close to you if you can add a Town in your post, obviously not your address though.

Emgee

Nice work John Thorne.

Emgee

Chris, grade H10 and H13 ground inserts are best for aluminium.

Emgee

Hi Brian

Neither listing states the insert tip radius and this radius affects the surface finish achievable, although of course other factors have to be taken into account. The last 2 digits (07-04-02) normally state the tip radius so 02 is .20mm rad and then 04 and 08 are .40 and .80 mm rads.

Ground finish Grade H10, H13 inserts will give the best results on non-ferrous metals and plastics.

Emgee

Kwil, one design feature I fail to understand is found on on most small 3" & 4" low cost vertical/horizontal rotary tables, it is the positioning of the rotary operating handle at the top corner of the table when used in vertical mode.

This position prevents me using that type on a milling machine with a boxed spindle, the housing will either foul the handle or place the operator in danger by close proximity to a rotating tool.

Moving to a Vertex and some other larger tables provides operating handles where they can be used safely.

Emgee

Edited By Emgee on 27/09/2015 11:01:38

Edited By Emgee on 27/09/2015 11:03:14

Hi Max, is it a D1-3 fitting chuck ?

Best measure and post all dimensions of the jaws, someone may have some spares.

Emgee

As MG says looks like your tool is being deflected by the cutting tip angle. Or could be the tool is not set truly at 90 degrees to the workpiece.

Emgee

Agree with David about lack of safe practice in many of the videos on YouTube, safe working should be a priority for all but it seems even basic rules are not followed in some videos.

Not all of the videos should be placed in the same category, many show good working methods and are helpful to all levels of ability, none of us should stop learning new tricks.

David, hope you have been leaving your views by commenting on what you consider unsafe methods.

Emgee

RJK If you have a fine downfeed on the quill you can also turn diameters with a lathe cutting tool set up in the vice, or perhaps you do this already.

Emgee

I like the good tip from Jason to save running to the shoulder.

When threading I always make 2 finishing passes at the same setting just to make sure of full depth cut, same as when boring.

Emgee

All the talk about old drives reminded me I have some information on five and a quarter inch diameter discs that I thought was unobtainable, any one with a BBC or other older and working computer care to offer a disc copy to modern media like CD so I can retrieve the information ? All costs would of course be refunded.

Emgee

Nice job Jason, is the front knurled or machined for the prop grip ?

Emgee

If the existing screed is breaking up in places I would suggest complete removal, then brush on bitumen damp proof course taking it up the walls to the existing DPC. Re-screed with Portland cement and sharp washed sand, 'polish' a finish to the screed with a steel float. Before use apply a good quality floor paint to make cleaning up a doddle.

Nick G,

Why reduce the diameter for the full depth, surely you only need the diameter reduced for the spigot length to fit the chuck recess ? remove the collet chuck and you would still have a faceplate for special jobs.

Emgee