Member postings for colin vercoe

spotting drills also pre chamfer the hole ready for tapping etc, they work very well in a milling machine as chamfer milling cutter.

Colin

With the Crawford type there are lots of size and shapes of these out there in industry so always a good supply to chose from, dont know much about the Burnerd though

used to use crawford collets collets on a Emimec Sprint auto lathe, would run all day 7 days a week never a problem

you can get some with grippers in the bore to stop bar push back, but they all rust if you let them.

consider the insert shape size and type as some only have two cutting edges, so become expensive to use.

I had a sandvik 63mm diameter with 5 triangular tips, the tips were held in place by wedge action so no location pin or screw this would take standard turning inserts as well as the milling inserts which are half the price of milling inserts, you might find a second hand one out there somewhere

We used to clean machines in an industrial environment lathes milling machines etc using a product called Elbow Grease which is water based and very similar to Flash floor cleaner, Morrisons also do their own very similar product called Citrus Shine, most of the dirt that a machine collects is water based eg coolant etc and this worked very well especially if soaked and then agitated with a soft dust pan brush.

Hi I have a mill with MT3 spindle and driving flats also, which will still accept all other MT3 tooling. It is the collet chuck that has extended driving flats down the MT shank and not the spindle, Also worth considering the Clarkson is an industry standard with positive locking and will not slip in the spindle.

I would try to find some EN24T or similar as much better quality than EN1A

Bargain trim tool for less than £150.00 quid

obviously not!

Slot drills are ground with one edge longer than the other past centre so that it cuts to the centre,They are also ground convex so only the outside edge cuts leaving a flat bottom to the machined slot.

Try the Halifax Rack and Screw Co they were very reasonable

Grinder dull red sparks -cast iron

bright yellow - steel

Second hand Tom Senior or Adcock Shipley for the best build quality

TG and DA collets were made with a loose captive pin in the collet that when the collet chuck was tightened the pin went into weldon slot on the shank and stopped the cutter from pulling out and it worked fine,the only problem was when the collet was mistakenly used on straight shank cutters, chuck cutter etc could be damaged.

Definition of an Expert, X = unknown quantity and a spert is a drip under pressure.

This is a tap driver used on capstan lathes etc, drives forwards on the pins when machine gets to depth stop tap continues to drive in then pulls off drive pins the small end rotates freely as machine engages reverse it locks and tap comes out, they also make them for split dies as well.

ColinBuild your own you can get a lorry load of timber for a few quid, and throw in a new drill n and chop saw as well win win

Garryson burrs probably the best bit more expensive but worth it I think.

Good luck with the bantam!

I purchased a new rhom 125mm on ebay for £100 a real bargain, worth keeping an eye on ebay look for Rhom, Abwood, Jones and Shipman etc

try using uncoated cutters the coating process forms a small radius on cutting edge so coated cutters are not as sharp as uncoated ones, they probably require higher spindle speeds as well, This also applies to carbide turning and milling inserts as well