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Member postings for Neil Lickfold

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

Thread: How often do you oil your lathe ways?
02/06/2019 10:04:05

I set up a gravity oil feeding system to the ways on my Myford. I keep the oil pot full when in use. I lower the pot to bed level between using it. It keeps the ways wet, and I wipe it down with a paper towel often. Works very well.

Thread: Which Qctp for mini lathe?
30/05/2019 19:36:30

Initially I had one of each type, and then settled on the Dickson type for all 3 lathes. I have since sold the wedge type . The wedge one was easier to make holders for, but was not as consistent for me as the dickson holder.

Thread: Do you wear a mask grinding HSS tool bits?
28/05/2019 21:08:23

Continued exposure to grinding dust will give you miners lung. The same thing from wood working and car paint refinishing. It is all basically the same thing. Stuff getting into your lungs that will cause an otherwise early departure. I can recall a test being done with exposure to Beryllium from grinding and milling it, making injection tools in the early 80's. The grinding wheel dust from wheel dressing and the tungsten dust from making D'bits was the highest risks. When 1 cutter was resharpened, it could not show a particle count. Making a cutter from the blank was measurable on that day. Initially it was a 1 morning test, that lead to a 1 month test. In that whole time, they had no Be gas collected that they could measure. Loads of carbide, and diamond wheel and regular grinding wheel dust. Also lots of BeCu dust from the surface grinding, but no Be only.


28/05/2019 08:15:11

It depends. If it is just a touch up of a tool, No.

Yes if it is taking a regular drill to a flat bottom , or vice versa, or making a new form tool from a blank.

The same for linishing, if it is just a very small thing and less than a couple of minutes , and a 1 off, Then No.

If I have lots of parts to linish, I wear a mask. Going to install a vacuum collection point on the linisher for the new shop though, and for the bandsaw as well.


Thread: sieg mill: normal chuck or collet chuck?
23/05/2019 08:50:34

Basically drill chucks are for centre cutting tools like, drills, reamers and centre drills.

A collet chuck is a Milling cutter tool holding chuck. Collet chucks can hold milling cutters and other cutters as well, like slitting saws on an arbore etc. They can also hold very well drill bits and centre drills as well.

They both have their places. Collet chucks are a very good investment in the machine tool.


Thread: Myford Super 7 - Cross Slide Problem
22/05/2019 08:36:39

Item 39 is a screw collar and has a little grub screw to secure it on the cross slide screw. This sets the back lash of the cross slide screw itself. If this comes loose , then the effective backlash on the cross slide becomes huge. Undo the grub screw about 1/2 turn. Then tighten it against the casting until the leadscrew does not turn. Then undo it a little bit , so that the screw can rotate. Do up the grub screw. If this clearance is correct, then it could be else where , like the screws of the casting being loose or the leadscrew nut screws are loose.


Thread: ER collet chuck runout
15/05/2019 01:31:34

So I got some ER11 collet nuts. Had a piece that needed to run quite true. When I used one of the new collet nuts, it was out by more than 0.05mm. Used the genuine ER nut and it was fine.

So I set up made a spacer and checked the original with my set up and the taper on the nut ran within 0.01mm, the new ones were out by as much as 0.1mm. So I set up and recut the 30 deg front taper using the thread and the back shoulder as a reference. Picture shows the inverted bore tool and the compound set at 30 deg. Using a Regofix ER11 collet holder with the sleeve spacer for the nut to seat against.

I also set up and trimmed the outside with it just on the thread of the mandrel 1st. Cutting the inner 30 deg taper was a second op.

Now they are just as good as the original collet nut.


Thread: Downloadable issues
14/05/2019 19:55:47

Thanks for the replies, I will try the pocket mags site.

Neil L

11/05/2019 04:01:22

Is there any way, that the magazine can be downloaded so that I can have a saved complete copy of the magazine on my Laptop.

That way, I do not need Internet access and can reference at any time a particular magazine. I want the adds in it, as often they advertise stuff and its becomes a useful source to support those who support the magazine.

Maybe the version that is downloaded can have a water mark added to the subscription owner or something to deter the odd ones that will share instead of getting a subscription.

The current system of being only online is so annoying, I am thinking of cancelling the electronic and only getting the physical magazines.

Thread: 2mt Myford Collet
01/05/2019 11:32:09
Posted by roy entwistle on 01/05/2019 08:39:32:

Neil All due respects but do you realise how thin the walls of that would be ?


There is a trick to making thin wall parts for sure. It is best if you have a tube of metal to go inside the bored hole for support back into the main piece of material. Then you can turn down the OD to suite. If it is a long bush say 50mm long, then a long bar with a centre support will be needed. Make sure it goes into the solid part by about 5mm or more if using a centre, and about 1 /2 diameter long if not centre supported. Then the OD can be measured as it is internally supported. Dont use the same grade of metal for the sleeve support, ie free cutting steel sleeve with a free cutting support. It can pick up. I use castor oil between the inner and support sleeve. With this method you can make parts that have a wall section of around 0.1mm, is the thinnest wall I have made. But with a 12mm sleeve and 12.7mm od, with sharp tools, the outer can be turned in 1 final pass of 14mm down to 12.7 . The heavy wall will self support the part for about 2 diameters long. After that it will want to fail. If the tools are not sharp enough, it will deform and make the inside smaller.


01/05/2019 08:18:31

You can make adapter bush, and hold other cutter sizes using a close fitting split bush. The bush needs to be in your case 12.70mm diameter or slightly larger at 12.75mm OD , with an ID of 12.00 max and a min of 11.96mm. The bush will need to be split.


Thread: DRO Z-Axis /4th axis "combiner"
26/04/2019 21:25:23

I have a 3 layer read and also want a scale on the column. This will be useful indeed. Thank you so much for sharing.

Neil Lickfold

Thread: Cheap DRO for Mill
25/04/2019 00:17:55

With a DRO, look at what you are requiring from the unit. Some have a much nicer and user friendly interface than others. If it is just to pitch holes and replace the normal dials on a machine tool any dro will do. If you want to cut curves, or put a row of holes on an off square axis, then look for a dro that has the lines of information that will show a radius value or and inclined layout. Some cheap dro that have these sort of features are like this one.

**LINK** You will have to do a search for the tech-3i manual. Anyway one feature I do like about it is the Radius feature for the odd job that does not require the resetting of a rotary table. My kit came with the 5um glass scales and are very happy with it. There are cheaper units, but I have not seen a cheaper one with the data line.

Most will have the reference thingy in them for if the power goes off and the axis is moved while the power is down. This will set back the reference again, assuming you used it to start with.

The one I really liked the best is from Newall DP1200, but that unit and scales is work more than my mill, but is really user friendly, and has a great graphic interface when the tool is approaching the zero point etc. It is what is on the lathe at work.


Thread: Machining a long part
24/04/2019 23:27:21

Like been said, more is needed to be advised correctly. Does the detail require any radial alignment?

So simple sliding fixtures can be made to hold and support parts that need detail at the end of a long workpiece.

There is numerous ways of indexing a length etc.


Thread: Z Axis-Support
23/04/2019 11:10:16

Dave, here is a link to info about gas struts, **LINK**

Anyway, it does appear that there is no Logic to Nm on the labelling. The strut is pressurised and that is measured in N force , or KG force or Lbs force.

Nm is a torque measurement, like ft lbs is a torque measurement as well.

Hope this helps people in the future.

23/04/2019 03:17:15

Some struts are adjustable in their pressure, and have a pressure bleed off screw at the fixed end of the cylinder. It is about a M3 or M4 set screw.

I changed mine around and now have it correctly mounted. Also made 3/8 hex adapter to use with my battery drill or the 3/8 ring spanner. No need for the really long handle that can sometimes get in the way when the table is close to the column.


Thread: Presumably this is done using CNC... but even so its impressive
22/04/2019 22:54:56

If the gap is less than 4 um, and all the same height/geometry , you will not see the line on fitted parts. Like on silicon moulding tools, the ejector pins need to fit better than 5 micron on diameter clearance, or else the material will go down the sides of the ejector pin. Skim wire edm to my knowledge was the 1st to be able to achieve these sort of tolerances on shaped parts. Now with sub micron machining centres, this level of accuracy can be achieved with milling cutters even with hardened parts. The way it came about with more than one reference was from the introduction of cad cam, and the new generation of designers and machine tool users not being trained in the traditional methods of toolmaking. Now there is another generation that have almost no knowledge of making something from solid, and they only know about additive processes and EBM Electron beam Machining, and EBP Electron beam Polishing.

Thread: Z Axis-Support
22/04/2019 22:27:37

The photo of the tag is for the part number reference if any one else would like t make a similar support.

I think the people in China who made the strut used Nm instead of N for the strength of the gas spring. Not sure if that is the max strength it has or the force required to move it. I weigh 74 kg and that was not enough to make it move.

22/04/2019 22:22:22
Posted by HOWARDT on 22/04/2019 13:19:24:

It looks as you have the cylinder mounted with the rod up. Manufacturers recommend rod down so that the rod seal remains lubrcated.

Thanks Howardt, Ill change it then. It's no deal to wind to the free length and to remove the Strut. I did not think about the oil inside keeping the seal wet/lubricated.

22/04/2019 11:42:47

I just checked the spindle to table max height, and it is at the max the manual says it should be. So I am happy that I have not lost any height in the addition of the strut. It is no issue to wind up and down the head assembly now. It used to be a lothesome job by hand. May get all enthusiastic and add an electrical power feed to it next.


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