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Member postings for ChrisB

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

Thread: Rocketronics Electronic Lead Screw
05/04/2021 08:01:58

Been trying to find a way round the fiddly process of changing gears back and forth for threading and turning for quite a while. I had made up my mind I wanted an ELS for my lathe and Clough42 and his very well explained tutorial on youtube seemed the way to go. I also read through the ELS project thread on the forum which was very helpful.

Then I came across this german site which have a complete kit for different sized lathes, and after reading through their system's functions it would seem it's one step short of turning your lathe into a CNC.

Apart from the thread cutting functions, it will do tapers (that is I can do away with the compound and replace with a solid tool post), ball turning, DRO function and more. It is expensive tho at around 1K, but with the tools it replaces would probably break even... There are also less expensive less fancy versions as well. I'm tempted!

What are your thoughts, anyone came across it before?


Thread: Gluing Aluminium
30/03/2021 21:10:41
Posted by Jouke van der Veen on 30/03/2021 20:47:56:

Good to hear how to bond DRO brackets to the lathe in stead of bolting! I do not like to drill holes in original parts of a “vintage” lathe.

I think chemical or mechanical cleaning will be a better pretreatment than degreasing with an organic liquid.

I don't think I ever came across mechanical preparation before bonding on the repair manuals. Probably because the aluminium sheet is clad, and abrading it will effect it's corrosion resistance. Wiping with MEK or acetone is always recommended. Acetone is more readily available tho. Of course one could try different ways as mentioned above and get good results.

I bonded a test bracket to the lathe bed to sample it's strength before the DRO install, I had to knock it off with a hammer to get it off. I hate drilling into machinery and apart from that, I find that bonding allows for better more precise positioning.

30/03/2021 20:32:13

Use scotch weld 2216, it will bond aluminium without any issues. It's also good for areas where vibrations are involved as it is slightly flexible, it is also unaffected by fuel (kerosene) We use it at work on aircraft composite to aluminium repairs, and in fuel tanks etc. I have used it to fix DRO brackets to my lathe and mill instead of drilling, it's as good as bolted. No major preparation required, just wipe the surfaces clean with acetone and you're done.

Thread: Skynet is Coming
25/02/2021 06:09:39

What would you say about these new robot vacuum cleaners? Equipped with wifi and lidar, it scans every corner of your apartment, creates a map and uploads it to your mobile...

Door intercomms with remote opeining is today also controlled via mobile app. I had an old video intercom which started acting up, checked the outdoor camera unit maybe there was something loose. I was surprised and shocked to learn that shorting a couple of wires released the door latch!

Thread: Message from ARC to our customers in the E.U.
11/12/2020 18:28:16
Posted by Sam Longley 1 on 11/12/2020 17:40:33:

It would be interesting to know what % of the goods that ARC sell into the EU is actually made in the Uk. Very little one might wonder But then I may be very wrong. If i am then that is bad for the UK because it is lost manufacturing.

Probably none, but then how many products are actually manufactured in the UK, built with UK tools and machines and by British people? I really doubt there's any piece of electronics, tooling or clothing in the planet which is not made entirely or partly in China.

10/12/2020 12:10:29

Thanks for your answer Ketan. Regarding Groupage hubs and freight forwarders, I have used their services for lots of orders from different UK traders (including Arc), EU and US traders without incident. Of course I bear the responsibility for the shipment from the hub to my country. I've had a lathe and a milling machine delivered this way.

Unfortunately the extra costs in taxes and paperwork will turn away overseas customers. I have stocked on what I needed from Arc last week, I really hope some sort of trade deal is made for the sake of both the exporter and importer.

10/12/2020 11:17:08

That's correct Dave, UK traders will be at a disadvantage when compared to Chinese traders. I do not know how they manage to deliver at such low postage rates, but then I suppose not all countries post and customs work the same, over here for example, for imports from the US and non EU countries (excluding China) I am required to produce the invoice and proof of payment. Only when I pay the customs duty and taxes will the order be released. For Chinese orders this is inexistent.

I have one question for Ketan, if I were to have an order delivered to a UK address (such as a groupage hub as I mentioned before) would that be considered as a local purchase and consequently charged VAT?

10/12/2020 08:21:22

Unfortunately this is the dark side of Brexit for EU customers. I get most of what I need from the UK and avoid paying hefty shipping costs through groupage hubs. Their shipping rates are generally much lower, the downside in my case being an extra week waiting time for delivery, but I can live with that.

However the groupage route will now see me getting double taxed on vat, add customs and fees and it will not be worth while. That said, I order lots of stuff from china with different couriers and don't recall ever being charged for customs or vat. They do charge for USA orders tho. Maybe it depends on the value of the orders?


Thread: Backplate for ER32 chuck
04/12/2020 06:18:52

I found this video on youtube **LINK** where the collet chuck is made adjustable through 4 screws. Another way to do it.

03/12/2020 14:12:40
Posted by Emgee on 03/12/2020 14:04:54:
Posted by Martin Dowing on 03/12/2020 13:48:37:

As long as your lathe has MT socket the best solution is to buy on ebay ER32 collet chuck on MT shank.

They cost 10 queeds or so.

The problem with that method is you lose the ability to pass long rod through the chuck.


And that as well.

Good point there Henry. Glad I asked before I started on my own!

03/12/2020 14:08:33
Posted by Martin Dowing on 03/12/2020 13:48:37:

As long as your lathe has MT socket the best solution is to buy on ebay ER32 collet chuck on MT shank.

They cost 10 queeds or so.

The lathe has an mt4 taper on the spindle so I could go with an ER32 MT4 collet chuck. My concern of going that way is ''precision tooling" at cheap ebay prices. The probability is there will be some degree of runout in the collet chuck, there might be some in the spindle taper as well (have not checked it) and there will be no way of correcting that. With a backplate mounted chuck I will be able to do some slight adjustment.

03/12/2020 12:23:55
Posted by Nicholas Wheeler 1 on 03/12/2020 12:06:02:

Have Warco stopped selling suitable backplates?

I kept the collet chuck when I upgraded to a WM250 from a mini-lathe at an ME show. Part of the discussion with the salesman was what I wanted the lathe for, and what I already had. Two backplates were included as part of the deal.

I guess they still sell them, but I placed my order elsewhere. Besides that I can use my money better, I'm better off machining a backplate myself rather than buying one and having it delivered.

03/12/2020 11:50:43

Sounds like a good plan Ian. The collet chuck will take a couple of weeks to be delivered, so in the meantime I'll try transforming the weight plate into a backplate and see how it machines.

03/12/2020 09:13:03

I have ordered a 125mm ER32 collet chuck from ARC **LINK** for my WM280 lathe. I did not get a backplate as I could not find one which fits on the spindle nose - so I will have to make one. From what I gathered reading some of the related posts the backplate is normally made from cast iron, some make it from steel.

I have a couple of weight plates I rarely used for their intended purpose which I was contemplating using for a backplate. They are cast iron and about the right dimensions I think. Is this a good idea?

Another question is about machining the backplate register. Some say tight tolerance for the fit of the chuck on the backplate, others say loose. For a collet chuck I would prefer to have minimal runout.


Thread: Steering side tube
28/11/2020 14:44:48

I would use seamless tube for something like that, chrome moly as mentioned or BS4T45 - both seamless and used for roll cages etc. T45 can be welded and will not require heat treatment post welding.

Thread: EBAY
28/11/2020 08:59:02
Posted by JasonB on 28/11/2020 07:49:31:

Chris, Just pointing out to Paul that "Asian company" is not referring to e-bay as his post reads to me.

I don't make the rules - just have to try and apply them and e-bay links tend to take more time to check as there is a need to decide where the item may be coming from as business seller at the bottom of the page does not always match there the item location says.

I know what you mean Jason, and I understand it would be impractical for moderators to check every posted link for compliance with the COC. I was guilty in the past for such links, but nowadays, out of respect for the work you guys do I refrain from posting such links (even tho I still disagree with the COC devil)

Although I'm not based in the UK I have purchased my lathe and mill from Warco, placed orders for tools from ARC, won bids on ebay and ordered from Banggood. I hate sweeping statements such as this or that chinese company sell only crap and junk... some items may be, but not everything is. I'm happy with most my purchases, I do my homework well before.

28/11/2020 07:38:27
Posted by JasonB on 28/11/2020 07:01:30:

You will also hopefully see that the "Asian company or that company" are not e-bay.

Jason, a large chunk of the stuff sold on ebay is probably worse than the stuff sold on " that company" aka Banggood..just saying...

Thread: Soldering Iron Tip
27/11/2020 11:34:20

The Parkside soldering station I have came with replaceable screw on tips, they are made from brass with some type of coating, once the coating wore off solder would not stick to the tip so I replaced it with a copper tip...a much much better improvement over the original ones. So if the tip of the soldering iron is copper I see no problem in filing it and re tinning it.

Thread: What am I?
25/11/2020 18:39:55

I think it depends on which country you come from and tradition of branch of engineering subject.

The OP mentioned he worked in aviation, some countries will call Cat A personnel as technicians, others will call them mechanics. Cat B are called certifying staff or support staff by some countries while others will call them engineers. It's tradition, in Malta where I come from, I'm an aircraft engineer, that's what our company and similar companies in this field refer to us. But a university graduated engineer will not take kindly me calling myself an engineer without having a degree!

Thread: New Toys Day!
22/11/2020 20:58:21

Glad to know I was of help to you Martin. Reading through Italian metalworking forums it seems like the Nebes and Femi are their preferred brands.

I also like your bargain Lee, likewise I do trawl ebay from time to time and when I do get a good deal it's like winning a lottery!

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