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Member postings for colin vercoe

Here is a list of all the postings colin vercoe has made in our forums. Click on a thread name to jump to the thread.

Thread: Can't disassemble drill chuck
26/01/2022 07:18:49

Try it with the jaws further towards the closed position, and press out from the front end.

Thread: Custom Thread Sizes
05/08/2021 09:45:56

Lengths of standard size Acme threaded bar are available to buy also bronze nuts to fit

Thread: Sourcing a Bolt
18/07/2021 12:23:28

stainless in aluminium can cause the aluminium to corrode away especially if subject to wet and salt etc, if you use stainless you should also use nylon isolation washers.

Thread: Button dies!!!!!
17/07/2021 19:47:38

I think spoke threads are rolled and not cut for strength

Thread: Moving machines
21/06/2021 11:59:25

There is a pallet truck available that will lift 500kg from about 80mm and lift to about a metre, they are safe and controllable you can hire them from Brandon tool hire etc

Thread: Water soluble coolant
20/05/2021 18:14:30

Oil under the vice etc with WD 40 will help reduce staining of the table if left bolted down for long periods

Thread: Boring aluminium - What am I getting wrong
22/04/2021 19:48:39

Hi

It looks to me that you have the tool in the head the wrong way around, the clamping screw usually clamps down on the top of the boring bar and pushes the bar down into its seat, you feed the bar out to the right as we are looking at it, you have the tool upside down and facing the wrong way also the cutting tip needs to be on centre to the feed out axis if that makes any sense, a high speed steel tool will cut well on this material at the speeds stated with cutting fluid as mentioned above.

cheers Colin.

Thread: Milling Cutters for the Novice
02/04/2021 10:06:34

I would go for three flute cutters as a general all round cutter as they can be used as an end mill and a slot drill and give great results for both operations.

Colin

Thread: JB Weld
16/03/2021 12:58:22

I Used a similar product Plastic Padding last year on a hot air pipe from a blower and it still there and working fine, outside in the sunshine.

Thread: Self Centering Vice
14/02/2021 13:37:17

we used them all the time, a matched pair with hardened vee jaws for milling keyways in shafts etc as they give great repeatability and they can grip on different diameters on the same shaft but bring the shaft to the same centre point each time, thus the same depth of cut and on centre, made by Edgewick , Herbert, etc

Thread: So it seemed like a great idea at the time
11/02/2021 17:58:31

Try JB Cutting Tools, top quality British made and very reasonably priced, and they come with a free insert!

Thread: Taper identification
29/10/2020 16:53:55

Hi the measurement given in your chart might refer to the Gauge Line measurement, this is a little further back the taper and not at the end where you are measuring from, the picture you have posted shows a line further back on your taper where it fits your taper this is the Gauge LIne measure here and see what you get.

Cheers Colin

Thread: Dressing a diamond wheel
15/10/2020 17:09:03

PS

I ment to mention that diamond wheels are for carbide and Borazon are for HSS, the same rules above apply to both.

Colin

15/10/2020 17:06:49

To dress a diamond wheel you use a dressing stick which has the appearance of a long half inch square slip stone this usually came with the diamond wheel this was a Norton wheel, switch on the grinder then switch off, then stop the wheel with the dressing stick, repeat until the wheel has been cleaned, this process clears out the ground carbide from the wheel face leaving the diamond exposed ready to use. This process only clears out the carbide and does not reduce the wheel size.

To true the wheel you use a truing tool about 8mm diameter sintered metal containing diamond particals, this is held in a vice or chuck etc and touched onto the wheel then passed across the face of the wheel this then trues the wheel by removing the diamond high spots, after doing this its best to keep wheel mounted on its arbour and remove it by removing the wheel and arbour complete, this requires arbours for each wheel if you can do this.

look at the Norton website if they are still going that is

Cheers Colin

Thread: Bolts or studs
12/10/2020 17:55:29

When making studs two thread gauges are used, the end that is fixed is made slightly larger than the nut end so that it fits better into the component and locks, this allows removal of the nut without the stud coming out.

Thread: Hydraulic ram machining
22/08/2020 21:05:46

Best to groove the rod with grinding disc where the machining is to finish so that the chrome is not lifted from parent metal, also for cross drilling remove the chrome on both sides of rod for the same reason, the company where I worked used pre ground stainless steel bar available in various sizes which is used for hydraulic rams and we made our own.

Hydraulic ram specials are not that expensive at about £150.00 - 200.00 quid each, try a company called Applied Fluid Power from St Austell Cornwall you might be pleasantly surprised.

Thread: HSS replacement tool tips.
09/08/2020 10:01:12

Try Plansee Tizit lots of info here

Cheers

09/08/2020 00:28:32

The tips you require are available from Plansee SM 80 grade sintered HSS various sizes and geometrys brilliant tips and can be re lapped. use speeds and feeds as for HSS these were available 20 years ago plansee way ahead of most of the tip manufactures at the time

Thread: Drilling X2 chilled casting
26/07/2020 17:29:28

sharp masonry drill should do it must be sharp, or try reducing the helix angle of hss drill [brass type cutting end] this works as well, beware if drilling a through hole as when close to other side the higher cutting pressure can cause damage as the drill breaks through.

Thread: Milling Insert Clarification
25/07/2020 19:18:22

TPUN is a turning insert geometry but can be used for milling but not as robust, go for TPUN 160308 the 08 being the radius on the tip cutting edge.

TPKN is a milling insert same triangular shape and thickness but the KN denotes ground facets on the cutting edge instead of the 08 radius more robust and a better finish, also more expensive

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