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Member postings for not done it yet

Here is a list of all the postings not done it yet has made in our forums. Click on a thread name to jump to the thread.

Thread: What are these wheels /tyres?
19/06/2019 19:28:24

I expect you can get a pair from any good tyre fitting service. Same place as your car tyres (if you have one).

Thread: Silver soldering cast iron?
19/06/2019 10:18:03

I’m with JB’s other option. If one can reach brazing temperature, it seems to be the better bet - braze is much, much cheaper than silver, for starters!

Thread: Is this cheap type of VFD worth buying?
19/06/2019 09:40:05

THAT is about the only reason I could think of - apart from when something gets jammed under a poorly set stop-bar or table! The latter being less necessary than your suggestion! I wait (without holding my breath!) for a sensible reason for the reversing option.smiley

Thread: Lathe Speed - What am I missing out on?
19/06/2019 08:05:56
Posted by Brian John on 19/06/2019 01:49:58:

Why do so many lathes (like mine) have speed dials that go up to 2000 RPM or 3000 RPM ? When would you ever use such high speeds ?

Have you ever tried to drill very small holes at 450rpm into steel? Say, 1mm or less! I believe lace bobbin makers often turn at those speeds (even though materials may not be metal).

Simply put, manufacturers cater for the widest range of users with any single model, so it is obvious for them to provide as wide a speed range as practicable. Old lathes, with plain bearings, were limited in rotational speed to around 1100rpm (without copious lubrication) whereas spindles with modern bearings can rotate safely at up to several thousands of rpm.

Thread: Slitting saw arbour
19/06/2019 07:51:48

You might like to peruse this thread **LINK** in relation to a keyed arbor or not. Howard describes the possible outcome quite succinctly!

Thread: Is this cheap type of VFD worth buying?
19/06/2019 07:22:31

A reversing switch on a linisher? I’m interested to know why. I would have thought an unnecessary addition, but I await the reason why, in anticipation of learning something new....

Thread: Precision Metal Pen Oiler
18/06/2019 21:37:14

I think your video summed it up nicely at 3m 10s.

‘If you are in the market for another little toy”

Not particularly precision, by the looks of it, and would one ever carry the correct grade of oil around in one’s pocket anyway. A proper oiler beside the machine suits me.

Thread: Is this cheap type of VFD worth buying?
18/06/2019 21:22:02

As I see it, these cheap inverters are OK, if used regularly, but offer little or no motor proection. Many don’t allow the motor to be switched after the device, so protection needs to be upstream of the VFD. A simple 13A fuse will not adequately protect an overloaded motor.

But our machines should not be left running whilst unattended, so perhaps the risk is small for everyone excepting those that cannot recognise a motor overload or the very few who do, but run their machines beyond their capabilities on a regular basis.

I would not wish to store one for too long or the capacitors might need conditioning (or replacing), before putting into service, to avoid VFD failure.

Thread: Lathe Speed - What am I missing out on?
18/06/2019 18:07:44

I often alter the cutting speed while turning or milling if I consider it is not optimum. It can change an acceptable finish to a much better one or help with chip breakage.

60 years ago, most pistol drills were single speed. Then two speed options became available, then variable speed, and later, battery powered. How many would go out and buy a single speed drill these days? Analogous to lathes and mills, methinks!

Thread: Improving runout in a slitting saw
18/06/2019 17:59:50

Adding or subtracting the errors of the machine and saw can change the eccentricity. I have used that to good effect while gear cutting in particular.

Thread: Tools or 'things' as therapy
18/06/2019 17:54:44

Plasma,

Only one handed? I can change mine with both - the mechanical lever on the left and the VFD, by pendant, on the right.smiley

Much the same with the mill, although both the handle and the VFD are on the right side of the machine (but I am right handed).

Overkill, maybe, but it increases the available speed range and I have not needed to use the back gear on the lathe so far...

Thread: Horizontal mill cutter
18/06/2019 10:48:14

Hi George,

Several things.

Hertz from the VFD might mean much lower power transmitted than rated motor power.

Too high a speed would quickly blunt a carbon steel cutter, especially if the tool post steel has a higher carbon content.

BMS, while low carbon, may have quite a hard surface.

Too light a cut may well dull the cutters quite quickly if they rub rather than cutting (more so with carbon steel cutters.]

Maybe a ‘swipe’ or two on each tooth with a stone might clean the cutter sufficiently to sharpen it up sufficiently? At least for a short while.

2mm is a slitting saw, to me.

I’ve not attempted to sharpen any of my horizontal cutters yet, but I think I would do it on the horizontal with the rotary table. It should only need the teeth under-cutting very slightly?

The Centec (~1.2HP) has not been used in horizontal mode for months. A 20mm slot in BMS would be cut using a roughing end mill - but probably not a 20mm one, with only half a horse power available.

Thread: Tools or 'things' as therapy
18/06/2019 10:05:15

I daresay that if one needs ‘therapy’, whatever works must be good.

Do these tools work better after being ‘caressed’? Fidgeting with a piece of equipment, object or tool is one thing, caressing seems to be entirely a different matter!

I certainly prefer a smooth, well designed and crafted tool to a rough and ‘awkward to use’ one - but that is simply on a technical level. It was the reason why I changed my lathe from a chinese heap to a Raglan, even though the latter was 50 years, or more, old.

Thread: Limitation of a milling machine with low spindle RPM.
18/06/2019 09:53:50
Posted by old mart on 17/06/2019 13:34:05:

I am facing the opposite problem, The Tom Senior light vertical which I am working on has only 4 speeds, the slowest of which is over 500rpm. A bit fast for larger drills and cutters in steel.

Wow, I would not want to be using any decent sized slitting saw at 500rpm, for a start!

Thread: Metal Bandsaw - Chester H80 or Warco CY90
18/06/2019 09:40:08

Ian,

Whether you actually need one or not may depend on how big the starting pieces might be and how many you need to cut. Other factors, such as physical ability, may also require consideration.

Smaller diameter (up to 40 mm) cuts were discussed in a fairly recent thread. Alternatives abound.

**LINK**

I would guess that most get on OK with either, but a considerable minority would have found it necessary to ‘tweak’ them or make repairs fairly early in the life of the machine.

The ratio of replies on a forum may not be too indicative of the real situation as many do not cut so much - and those with failures tend to be more vocal than the quietly satisfied group.

Alternatives should certainly be included in the original request, if at all green on the topic.

Thread: New member intro!
17/06/2019 17:52:45
Posted by AdrianR on 17/06/2019 15:44:16:

Hello Arath,

Welcome to the forum, I am from Lincolnshire int eh UK, where in the are you from?

Adrian

Adrian,

Arsath is one of the few with a profile. Details there.

Welcome, Arsath. Or should we call you Mohammed? Never quite sure which name we should use!

Presumably you keep well away from the product, so don’t speak with a ‘squeaky’ voice? smiley

Does your company deal with other gases, too?

Thread: Belt sander recommendations
16/06/2019 18:03:35

Give us a few more clues.

No profile, so no location.

‘Small table top’ can be rather subjective.

Width of belt you are looking for?

So what is the current size and weight?

New or second hand?

Might be other relevant specifications.

Thread: spindle bearings
15/06/2019 12:34:49

And use the bearing manufacturer’s advice on lubrication - not the machine supplier. The latter would likely be inferior and more expensive! (I did note the supplier was not Arc, before making that comment)

Thread: How to machine Acetal
15/06/2019 08:43:52

Probably the easiest material I have turned.

A sharp tool, I use HSS for this. Reasonably slow speed and watch out for heat - it can burst into flames apparently, except they are invisible!

I have never tried to cut that length in small diameter. It likely needs small cuts and a following steady as it will easily deform, particularly with heavy cuts and when warmed up. Definitely keep the pressure axially, not radially.

Thread: Super Mini Lathe belt problem
14/06/2019 23:19:58
Posted by Haggerleases on 14/06/2019 22:57:15:

Well done Warco for passing on a pile of crap for quick profit. They'll be gone soon, I guarantee it. You can see it coming.

I don’t like bang good, for a very good reason - they sell cheap stuff but have no customer service when the goods are really rubbish (which they often are?)

Why do you dislike Warco?

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