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Member postings for Martin Hamilton 1

Here is a list of all the postings Martin Hamilton 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: What Metal is this?
19/11/2020 18:35:51

I now mainly use inserts for aluminum on most materials now, aluminum inserts are also very good on stainless.

Thread: Enlarging Holes in Thin Aluminium
15/10/2020 20:30:09

The rc car body reamers will cut from 0-14mm.

15/10/2020 20:26:30
Posted by Paul Lousick on 14/10/2020 04:14:56:

Martin, Is the rc reamer that you refer to the same as this ? They are not only used for rc models but used in general industry.

Avilable from Rc Components, ebay and local hardware stores.

Paul.

taper hand reamer.jpg

Edited By Paul Lousick on 14/10/2020 04:16:44

Paul i also have one of the reamers that you show. The rc car body reamers are slightly different but with the same principle, the car reamers only have a single cutting flute. The rest of the reamer is a full tapered round shape, with only 1 cutting flute these reamers cut very circular holes indeed & pretty sharp for cutting plastics, thin aluminium or brass sheet.

13/10/2020 23:38:05

Get yourself an rc car tapered body reamer, used for opening up holes in thin lexan bodies. These also work great on thin sheet metals like aluminum or brass, you can cut any size from around 2mm - 14mm. No steps on these reamers, just a complete taper the length of the reamer. Available from RC Model shops or plenty on Ebay, just search rc car body reamer, these reamers are pretty sharp & give a very nicely finished round hole.

Thread: Is a drip feed coolant advisable
27/07/2020 14:17:48

If i need to use cutting fluid on my Sherline lathe i use pot & brush method, i use both paraffin or Castrol ILOCUT 486 neat cutting oil.

Thread: How to stop scam phone calls for good?
21/07/2020 22:17:08
Posted by Stuart Smith 5 on 21/07/2020 21:45:32:

We were always being pestered by nuisance calls, so I bought a BT branded cordless phone (actually have 3 phones but you can get just the one). This incorporates call screening and blocking facilities without any extra ongoing costs and can be used with any service provider.

Have had it for a couple of years now and it has completely stopped nuisance calls.

You can programme friends, family etc in and they get through straight away. Any number not in the list gets a recorded message asking who is calling. A legitimate caller responds, the phone then rings and plays the callers message. You can choose to accept or reject the call, or leave it to let the answerphone switch in. Scammers and nuisance callers don’t respond and also silent calls don’t even cause the phone to ring.

Cant recommend it highly enough.

It incorporates Truecall technology, but there are no ongoing costs.

Stuart

Yes i agree Stuart, we tried all the different options over time that BT had to offer but still it did not eliminate all the junk calls. Even still got UK companys who were selling or marketing still come through, not to mention the scammers from other countries. When we spoke to BT about all the various options we had tried over time but still ended up getting more & more unwanted calls. BT told us that it was virtually impossible for them to keep up with the methods used by the scammers to get through, they said that their new truecall technology was the way to go. Like Stuart we have never looked back since getting these BT Premium handsets, another bonus was our old Panasonic handsets which we had had for several years were starting to play up re batteries not charging properly & other problems were due for renewal anyway. So it didn't cost us anymore than we were going to spend anyway.

21/07/2020 15:30:42

These scammers around the world are very clever & ahead of the curve, in the end the scammers number would come up on the phone as UK numbers when they were not. This is one reason why they got through & fooled the usual methods that phone company's offered usually for free to block calls. These numbers would come up as not recognised numbers when you tried to trace the number, they also constantly changed these numbers which is why BT could not keep up with blocking these numbers. I understand their true call technology has a way of not letting these calls through & the calls are diverted & binned somewhere. With True Call it lets your known numbers through straight away to you, numbers out side of this you get a call from BT to say who is calling & do you want the call. Up until now not one scammer has ever got through to even an announced call to us. We had over the years used all the other usual methods that you do to stop unwanted calls with nothing stopping them completely, it was a strange feeling when we first installed these phones where we were so used to the phone ringing constantly through out the day. You would be sitting waiting for the phone to ring where we were so used to the ringing all day off & on.

Thread: EN3B Mild Steel is a pain or is it me?
21/07/2020 14:56:42

EN 3B is always going to be more difficult on Sherline, on a Sherline it also depends on the type & method you use for parting. I use the Sherline rear mounted inverted HSS T shape parting tool which is also only around 1mm wide, this parts like a dream on my Sherline. I also sometimes use a 1.5mm carbide insert parting tool mounted on the front side of the lathe for convenience if i have my QR toolpost already mounted. Depending on what material i am parting off with this tool, aluminium, brass or EN1 steel part pretty good, other steels need more care. The rear mounted inverted HSS parting tool wins hands down on a Sherline.

Edited By Martin Hamilton 1 on 21/07/2020 14:58:12

Thread: How to stop scam phone calls for good?
21/07/2020 14:33:45

We replaced our phones with BT Premium handsets @ £80 for 3 about 6 months ago due to constant scam calls, we had used all the usual methods that BT offered. But the scammers constantly found ways around these methods & BT said it was very difficult for them to stop these calls. Since we installed the BT premium handsets we have not had 1 single scam call in 6 months, i believe these phones use something called True Call which stops scammers calls coming through to your number, best 80 quid we ever spent for complete peace now re phones constantly ringing.

Thread: SuperGlue as a means of holding in lathe
17/07/2020 00:12:44
Posted by Chris TickTock on 15/07/2020 16:52:13:
Posted by Martin Hamilton 1 on 15/07/2020 14:15:59:

Chris i turned and bored an 83 mm diameter x 25 mm thick aluminium billet super glued to a face plate on my Sherline lathe. No problem at all, the hardest part was breaking the glued joint as i used a little to much glue. Its surprising how a small amount of Super glue spreads over a large area, just had to heat to a slightly higher temp to unbond the joint. Smaller items will break the joint with a light tap but the large area i had was practically impossible to break the joint without heating without causing damage to the parts with hammering.

Many thanks Martin,

I take it you also must have the riser set to increase the size of stock you can machine. I am still researching Loctite 480. My findings (some from posters on this forum) is that the bond it makes requires moisture so a thin ring maybe the answer. Cure time is 24 hours but I am investigating as set time is seconds. A heat gun maybe the way to release the 2 components rather than a torch.

Chris

No riser used, billet just cleared the bed by a hair. Round billet had to be glued quite central otherwise it risked touching the bed.

15/07/2020 14:34:06

Delete.

Edited By Martin Hamilton 1 on 15/07/2020 14:35:26

Thread: Gluing metal
15/07/2020 14:33:17

That's a no brainer, JB Weld original. Incredible what this stuff will do, you can even drill & tap threads in it. It also takes more heat to break a bond than just about any other 2 part adhesive.

Thread: SuperGlue as a means of holding in lathe
15/07/2020 14:15:59

Chris i turned and bored an 83 mm diameter x 25 mm thick aluminium billet super glued to a face plate on my Sherline lathe. No problem at all, the hardest part was breaking the glued joint as i used a little to much glue. Its surprising how a small amount of Super glue spreads over a large area, just had to heat to a slightly higher temp to unbond the joint. Smaller items will break the joint with a light tap but the large area i had was practically impossible to break the joint without heating without causing damage to the parts with hammering.

Thread: What’s best glue for joining wood to PVC pipe?
21/06/2020 16:53:54

You want Devcon Plastic welder 2 part adhesive, this is an acrylite glue intended for plastics. It is also good on metal, wood, glassfiber etc. Hobby shops or Ebay for around £8 or £9.

Thread: Cross slide adjustment?
03/06/2020 13:43:05

I believe access to the split nut adjuster screws on the WM240 lathe is via the rear under side of the cross slide.

Thread: Balancing IC engine
02/05/2020 11:12:34

I always used 55% balance ( 50% - 60% is good ) on my 2.5cc & 3.5cc racing 2 stroke glow engines that i made & used to race at around 30000 rpm. Weigh top of rod, then weigh bottom of rod. weigh complete piston assembly ie piston, rings if used,wrist pin,.circlips. Then add the weight of the top half of the rod to the weight of the piston assembly, now take a percentage of 50% - 60% of this weight & then add this weight to the bottom half of the rod. This is the weight that you need to machine a simple round balance weight that will slide onto the crank pin, then sit the crank on 2 parallel knife edges to check the balance & take appropriate material from the crank web to balance. On my particular engines i also used to have to add tungsten slugs opposite the crank pin to get the accurate balance i was looking for at very high rpm. You wont need this on much slower rpm engines though.

Thread: Eunicell SR44 ... These are very cheap, but are they any good ?
29/04/2020 11:54:28

I bought a card of the cheap JCB brand batteries, i needed to change my watch battery that had been used for around 2+ years on its original battery. Cheapo JCB battery that i fitted only lasted about 6 months & had to change again, they were ok to have as a stand by but would not buy again. I have always had good luck with the Tronic button cells that Lidl sell though.

Thread: Parting tool material
26/04/2020 15:16:01

I have just tried a Stellite tool on a magnet & it is not magnetic at all, unlike HSS with 8% cobalt.

Thread: Whatever happened to...
20/04/2020 13:35:48

What happened to Smedleys tinned sausage rolls from the 1960's, they were delicious.

Thread: Which Lathe???
05/04/2020 23:17:23

I have always thought Myfords have been way over priced, as an example Home & Workshop Machinery has a Myford Connoisseur big bore for a whopping £14000 + vat £16800 total.

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