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Member postings for MalcB

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

Thread: LOST WAX CASTING
13/10/2016 20:29:04

Have  you considered using Rocol mould release?

You may also find something from the Foseco Dycote stable that would help you. 

 

 

Edited By MalcB on 13/10/2016 20:33:38

Thread: How should one protect ferrous tools?
14/09/2016 09:01:30
Posted by Martin 100 on 13/09/2016 19:49:02:

ACF- 50 Plenty of sellers on ebay and a few UK retail outlets - 15 quid for an aerosol or 30 quid for the refillable bulk pack .

Another big plus for ACF-50.

It works very well also against salty conditions.

Proven by many on their bikes thru' the winters salted roads on both ferrous and non-ferrous surfaces.

Just try missing a bit of the surface like i did and you will realise just how good it is.

 

 

Edited By MalcB on 14/09/2016 09:07:32

Thread: Drill chucks
13/09/2016 18:34:54

Hi Piero,

If i am reading you right you want to hold parallel shank cutters from 5-25mm. If this is so, then i would launch straight in and get a half decent ER32 or even ER40 collet chuck and collet set.

I would then go for something like a decent used 0-3/8" Cardinal chuck and mount it on a parallel shank short arbor. You can then hold it in the relevant collet without having to remove your collet chuck all the time. This arrangement will cover much of your needs ( but not all ) if you have sufficient room on your Z axis.

Thread: Boxford manual
27/05/2016 18:13:40

Plus one - join the Yahoo Boxford owners group. Everything you need to know in the files on there. Genuine Boxford parts list as well with great exploded views. You can also get a Hard copy of "know your lathe" from Denford quite cheap ( try looking looking on Amazon ) if you like to have one at your side. Much more convenient than electronic copies or printing them all off.

 

Edited By MalcB on 27/05/2016 18:14:28

Thread: cutting/tapping fluid
12/05/2016 15:49:54

I used to have to cut many lead screws for machinery repairs on a conventional DSG toolroom lathe and never really had much success trying different strength levels of soluble cutting oil at the time. It never gave me much confidence though..

This being well before the advent of CNC with their higjh speeds and flood lubrication where cutting fluids do work well when properly mixed, monitored and controlled.

Like many others at those earlier times I experimented with various home brew compounds to try and improve consistancy and finishes. The most successful for me was in fact carbon tetrachloride, but for health and safety reasons around the early 80's ( I think ) it became a massive no no.

Mick Henshall is quite right in actually suggesting tallow, which is also good on dead centre work. I had quite a lot of success also using it for screw cutting when mixed with graphite.

We used to mix powdered graphite into lightly melted tallow to soak our cycle and motorcycle chains in ( before sealed chains were in use ). This mix was also tried for screwcutting with some good results on certain steels.

Rocol and comparible alternatives took the gueswork out of trying homebrews. For me though, the Ambersill Tufcut is good on the tougher steels, stainless and duplex stainlesses like monel, zeron 100 etc.

 

 

Edited By MalcB on 12/05/2016 15:50:39

Thread: ER collet chuck runout
27/04/2016 08:02:03

Hi Michael,

I would seriously think about dumping the MT4 mounted ER40 chuck and replace it with a backplate mounted version. This will actually allow you to passup to 30mm diameter stock into your spindle. It will also give you the controls needed to set the accuracy of just how true your backplate mounted holder will be.

Thread: Another scammer
13/04/2016 09:14:36

Thats a 100% scam.

Send the one liner " cash on collection only " and you will received no further contact.

I have had similar for my lathe i am selling. Unfortunately Paypal is NOT 100% safe for all sellers. Buyers have 180 days to lodge a claim and this has been part of a scams also.

Payment is made. Goods are collected. Claim then goes in say goods not received. Monies refunded.

Be careful out there, they are after something for nothing.

Thread: Windows 10 - A Warning
31/03/2016 08:06:44
Posted by Sam Longley 1 on 31/03/2016 07:19:17:
Posted by An Other on 30/03/2016 19:23:53:

Anyone remember the Atari 260 and 512 computers (Motorola 68000), which used an early version of the original Windows spec.? (not the Gates rubbish).

Why do people insist on rubbishing windows. It is an operating system used by the world. It has been marketed in the most expert way. It does what most people want it to do. In the first instance as a shallow operating system it is not that difficult to use. It will do a lot more, if people actually learned how to use it fully.- One could go on but I think you get the drift

Or is it that people are just jealous of success?

I can only agree with this and Michael Walters earlier post. Why are people rubbishing world class software like Windows 10.

I have Windows 10 on my home use works computer, my laptop and my own home PC. After having Vista, windows 7 and Windows 8 previously, the 10 is a much welcome upgrade. I really like 10 with the exception of the much limited mail system, but i put that down to clever Microsoft marketting pushing you towards Wimdows Office. I have W Office 2016 Pro anyway so Outlook deals with bulk email sending i need, so hey ho.

To me Windows lost its way with Vista after the megga success of XP but i think they are now getting back there with 10 and i do in fact favour the automatic updates running that is a main issue here.

Going back to the original OP,s posting, Steve was the laptop the right tool for the job with only 2gb usage? Maybe not as a decent tablet not running windows may have been the way to go. cant really tell this though as you dont mention the extent of his requirements?

Ignoring warning emails from Sky on usage can only be accreditted as a user fault and not a Windows 10 issue.

Thread: Nice V Mill on the bay.
16/03/2016 06:27:56

Thanks for that.

15/03/2016 23:29:41

Hayes Diemaster.

Quality restoration project.

Don't know if the link works.

 

Edited By MalcB on 15/03/2016 23:31:54

Thread: QCTP For Boxford Model A
28/02/2016 22:30:02

I am using the RDG T1 sized ( next up from Myford size ) on my 4 1/2" AUD. Takes the 16mm tools and less. I have about a dozen tool holders now, which are very cheap as I am able to collect from store.

Cannot compare with the imported piston types as never used the side by side, but for the prices paid I am very happy with my choice.

Depending on your tool shank sizes you may have to buy some longer socket grub screws for the centre height adjustment, as for some tools the supplied screws are too short ( or certainly were for me ) they are cheap enough. The holders for me are certainly rigid enough, including the parting off setup.

I have a friend who used the Myford sized one on his Boxford, but it wasn't substantial enough and he lost out on some rigidity, so he replaced with the T1 setup.

I would say taking aside some chucks, it's my Best Buy for this lathe. I do have one of the HBM 125mm self centring 4 jaws on it as well which is a really good ( and surprisingly accurate ) buy.

Thread: Babbit = Pewter ?
25/02/2016 21:25:37

It depends on how critical your application is. With lower speeds and a low load application, coupled with maintaining a good film of lubrication, you may get away when trying to alloy the materials yourself.

The widely varying melting temperatures of each of the alloys in producing the final alloy can very easily lead to a none homogeneous structure of the resultant alloy which will give premature failure.

Probably the two most used tin base alloys used ( in the UK ) are BS3332/A ( preferred for centrifugal casting ) and BS3332/C ( preferred for static casting. Both suitable for high speed and high loading applications. Then BS3332/F for lead based applications.

Cadmium and to some extent silver was used in quite a few alloys to "stiffen" up bearings on high loads but Cadmium has thankfully been  phased out because of its high toxicity.

Edited By MalcB on 25/02/2016 21:26:47

Thread: Your recommendations to a total beginner looking to use CAD software?
24/02/2016 08:29:48
Posted by IanT on 16/08/2015 12:16:48:

"The current version of Turbocad Deluxe seems to be v21 and costs something like £65"

It may well do Muzzer but you can buy a slightly earlier version of TC (which will have almost exactly the same functionality) for a lot less money. I think Maplins has been mentioned - TC v18 for £9.99.

IanT.

They seem to be offering V20 on EBay for about a tenner on the basis it automatic upgrades to latest version.

Do you think it would then go to V21?

Thread: Which lathe?
18/02/2016 17:54:15

The choice of Metric vs Imperial:

I was told in 1967 when I served my apprenticeship to start thinking and buying Metric tackle.

WRONG - when I semi retired 3 1/2 years ago we were still working in both metric and imperial alongside of each other. It's been like that all through my engineering life.

The choice really is down to what you intend to do. If you have any contact with USA items or old British stuff them imperial is advantageous. All else will be Metric. The Stuart beam engine I am almost at the end of is all imperial. I have no experience with any other kits available but others on here will advise.

At the moment I only have a metric Boxford which I hope to replace shortly. I personally also like the Warco lathes from all the imports, but I have only had British lathes before. My last lathe when I had the room was a Colchester Master. My choice will more than likely be another ex British machine like the Bantum 2000 or even something like the Boxford 330 toolroom lathe like what's running on EBay at the moment.

I served my time In the toolroom on lathes such as Hardinge HLV, the Monarch 10EE and DSG toolroom lathes.

If you buy a new machine make sure it's one that can cope with both metric and imperial threads if you intend doing any screwcutting.

DRO will sort anything else for you as it's just one button to switch between either. With your budget DRO for me is a MUST HAVE.

Thread: The Manchester Model Engineering Exhibition
17/02/2016 09:46:26

I wouldn't put Anson Engine Museum on your ALSO visit list as it dosnt open until Easter.

I think with regard to Event City Shows it may well have been like the one our motorcycle club show at in a couple of months time. As a club we get free entry along with a free double stand area to promote.

Money is taken from the business operators who attend and sell. If it was run on a similar basis then maybe there was just not enough cash generated from sellers to keep it viable.

Thread: Daft question (maybe)
07/02/2016 21:59:20

Myford are in fact making new Machines themselves so to speak.

Been in there quite a few times and had decent conversations with them and yes they build up on site. Much material and sub con machining is still sourced UK. Their finishing is to a much higher standard than overseas but is certainly reflected in price.

The operation and range is very limited compared to their previous structure. They were very busy last time I was in.

Thread: Chilled cast iron piston casting
05/02/2016 17:55:49

Hi, just as KWIL has outlined really.

Dont know where you are located but if you can find your nearest profile cutting shop you could ask them if they would kindly drop it in with their next stress relieving batch.

It's not normalising as its only soaked at about 600 deg C but cooling will be controlled at 50 deg C per hour.

Thread: Colchester Student -ER40
03/02/2016 19:07:56

Yes, RDG actually do collets up to 30mm

03/02/2016 16:36:58

I bought one of the backplate mounted ER40 chucks from Arc for my Boxford, which I am quite pleased with.

It allows me to share my VMC collet set I only get 20mm down the spindle but up to the max collet size of 26mm from front face down to spindle bore.

Not sure if you can get bigger than 26mm for an ER40.

The accuracy is as good as you can get from the fit on the backplate that you can get and machine.

You do have the option of getting it set up in your existing 4 jaw chuck, but it takes time, alternatively if you can get your hands on another half decent slim 4 jaw chuck you could leave it permanently set in that

Thread: chinese sellers refunding rather than supply
03/02/2016 16:08:06

I havnt had problems yet like this myself even down to purchases of less than a fiver.

Take the refunds through PayPal and when it's cleared leave negative feedback.

Your excuse when they question it is what you say, that the product is still for sale, you have had your time wasted and so you challenge their truth.

It sounds a bit like they are trying to batch purchases to save on postage costs or more than likely have nil stock.

They leave adds running all the time as otherwise they keep having to pay new listing fees.

Suppliers like RDG do this but they take the trouble to amend their adds with a massive purchase price which you read as out of stock for the time being so no relisting fees.

Looks like you may be dealing with a supplier that hasn't done this.

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