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Member postings for Ron Laden

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

Thread: Mini-lathe dying..?
25/11/2018 09:06:19
Posted by john carruthers on 25/11/2018 08:56:27:

I fitted one of Arc's lead screw grommets...
**LINK**

Thanks for that John, I didnt realise you could get one.

Ron

Thread: Space Ship leaves Earth's Atmosphere
25/11/2018 09:01:37

Thanks Neil, that is amazing seeing a launch from space, what always amazes me is earths escape velocity isnt it something like 7 miles per second..? When you think of the Shuttle it was a big lump thinking of that travelling at that speed....amazing.

Ron

Thread: New Mill - Starter Tooling
25/11/2018 08:03:07

Thanks George,

I havnt made a flycutter yet but I thought I would give the tipped cutter a try in the boring head just to see how it performs. I had to bend the shank down to get the tip below the head and I managed to do that cold between 3 dowels in the bench vice. I didnt change the shape or angles on the tip, just sharpened it and ran it across a diamond card.

Anyway, it seems to work a treat I used a piece of 6082 and ran the cutter at 550 rpm, 1.0 mm cuts plus a finishing cut, leaves a nice finish too. I will now make a 12mm sleeve for it so it has a proper fit in the head and a couple of the angles on the tip need increasing..I think..?

dsc06249.jpg

24/11/2018 08:43:56
Posted by JasonB on 21/11/2018 12:24:08:

20deg slot in the head. Make slot say 1mm wider than toolbit and aim to have edge of tool bit on ctr of holder so for a 6mm sq cutter slot will be 1mm one side and 6mm the other side of ctr.

12 or 16mm shank to fit your collet and about a 40mm head diameter.

As my man says, flycutting and how to grind a flycutter bit in the next MEW which is due to hit your screens any day now.

Jason, just read your latest milling for beginners re flycutters, very informative. I remembered I had a left hand tipped tool in the lathe set I bought some time back (picture below). Now I have a green wheel I can sharpen them, do you think I could shape and sharpen this to work as a flycutter and if so what would you suggest.

Ron

dsc06247.jpg

23/11/2018 20:30:29

Hi Martin,

Your table may have cost a lot more but it does have quality written all over it, fully machined and it looks heavy duty. I bet it is spot on accurate straight out of the box and the two downward acting clamps is the way to go as they dont put any side loads into the table. Seeing the machined centre on the table did it come with any inserts for alignment to the spindle and work piece positioning etc.

Ron

Thread: Model Electric Motors?
23/11/2018 19:59:19

That really is very nice indeed Jason, you have made a lovely job of it, I,m still amazed at how fast it runs. When its ticking over I could listen to it for ages, its a bit like an old clock ticking away in the background, something very soothing about it.

Ron

Thread: New Mill - Starter Tooling
23/11/2018 18:36:21

Thanks Geoff, that is a good idea, I wondered if the table would come with two locks but it only has the one.

Ron

23/11/2018 17:12:44

My Warco 100mm rotary table arrived this morning, should anyone be considering one it may be of interest to know what I found with mine.

At £56 which includes VAT and delivery I was expecting the table to look cheap and possibly nasty but I was pleasantly surprised. Obviously it doesnt look like a table costing five or six times the price but for the money it could look a lot worse.

After cleaning off the protective gunge I did a few checks. Turning the drive handle felt very smooth all the way around a full rotation of the table with no tight spots. There was however a few thou of end float in the drive spindle plus a similar amount of backlash when rotating the table by hand. There was no float when pushing the table from side to side plus no lift between the table and base so that was good.

I then stripped the table down to see what was what and if there was any adjustment available. Adjusting the drive spindle end float is easy to do by taking up any slack with the graduated drive boss which is held by a single grub screw. The adjustment for the table backlash is made by adjusting the mesh of the drive gears and the way this is done is crude to say the least. The geared drive spindle runs in a tubular housing which has a square fixing flange, this is fastened to the base by 4 caphead screws. There is a grub screw in the base casting which when screwed in contacts the outside of the spindle housing and pushes it closer to the table gear despite the housing been fixed to the base by 4 screws. Very crude and not too good on the engineering front but having said that it works.

I played with the adjustments for some little while to get a balance between the feel and operation of the drive handle and a reduction in any play or backlash at the table. Checking with a dial gauge I managed 0.001" end float on the drive spindle and between 0.001" and 0.002" rotational backlash on the table, it varied around the full 360 degrees. Also the table lock acts horizontally on the side of the table and this pushed the table off centre by 0.002" when locked.

So all in all I think the table is good when you consider the price, I dont think you could expect much better. I am going to look into improving the gear adjustment and I am going to make and add a 150mm adaptor plate to it.

dsc06243.jpg

22/11/2018 16:57:31

Thinking more about making and adding a 150mm adaptor plate to the 100mm rotary table, I wondered if there is an accepted or standard layout for the plates fixing holes. I was thinking of just placing the holes at 15mm centres along 8 radial lines set at 45 degrees. I then got to thinking would it be more useful to have 4 T slots each set at 90 degrees with some additional fixing holes added in between or would the T slots alone cover most jobs..?

Would be interested to know what you guys that use tables think.

Ron

Thread: Another new mill
22/11/2018 13:27:10
Posted by geoff walker 1 on 22/11/2018 12:36:59:

img_3599.jpgHi All,

Well after two weeks and a few small jobs I have to say I'm really pleased with the SX2P. It will certainly meet my needs for some years to come. 8.5 out of 10 at least.

Big downside, definitely the torsion arm. I can fully understand why owners are replacing with a gas strut. The strut gives stability through the full range of vertical travel, around 220mm.

As you can see I've replaced it already, the strut arrived yesterday and it was on the machine by 3pm,

img_3597.jpg

I know Ron (Laden) will be interested as may others, The strut was supplied by SGS engineering, 15mm body and 6mm strut. The product code is GS6-15-220-250 and the load is 120 newtons. The end couplings selected were the ones coded T5. I had to shorten these to make the strut fit the space, no real problem.

I chose 120N as the from the reviews I had read the person who used 60N said it was not enough and Howard Winwood in his Arc review suggested his at 150 may possibly have been to much. I'm happy with the 120N

In case anyone is wondering, no, I did not take a chunk out of the vice. I inherited the vice some years ago, already damaged.

Geoff

Thanks Geoff for the details, I will get one on order and get it changed over.

Ron

Thread: MEW Subscription
22/11/2018 10:48:51

I used to buy the odd ME and MEW mag now and then but yesterday I subscribed to MEW (digital version).

I didnt expect to be able to see back issues as well as the current mag, really impressed with that as I can now catch up on Neils and Jasons beginners lathe and mill.

Certainly great value for money.

Ron

Thread: New Mill - Starter Tooling
21/11/2018 14:38:09
Posted by JasonB on 21/11/2018 12:24:08:

20deg slot in the head. Make slot say 1mm wider than toolbit and aim to have edge of tool bit on ctr of holder so for a 6mm sq cutter slot will be 1mm one side and 6mm the other side of ctr.

12 or 16mm shank to fit your collet and about a 40mm head diameter.

As my man says, flycutting and how to grind a flycutter bit in the next MEW which is due to hit your screens any day now.

Jason, I assume that will be issue 275 December, I have this afternoon subscribed to MEW and the first one I have is 274. Thanks for the info above by the way.

Ron

21/11/2018 10:45:39

I was going to buy a fly cutter but seeing as I have some steel round bar I thought it a good little project to make one.

It will be simple and just a copy of the ones I have seen in the catalogue,s, a couple of questions though if someone wouldnt mind checking their cutter. The tool location is off centre, does the slot start at the centre or a little further out. Also, the tool angle..20 degrees or there abouts..? Its a bit difficult to see from the catalogue pictures.

Thanks

Ron

Edited By Ron Laden on 21/11/2018 10:51:38

Thread: Model Electric Motors?
20/11/2018 22:14:30

Impressive Andrew, you obviously know your stuff, unfortunately I didnt understand any of it but I am still awake..smiley

Ron

Thread: New Mill - Starter Tooling
20/11/2018 15:38:15

I have ordered the cheapie 100mm rotary table from Warco, at £56 I thought I would give it a go. What it will be like I dont know but speaking to Warco they said it is surprisingly well made (I guess they would say that). I know Paul said he had a cheap 100mm table and it was rubbish with an 0.008" pull off centre when it was locked down.

I,m keeping my fingers crossed that it will be ok, but if not I,m quite prepared to try and improve it if I can, at the price its worth a try. I know 100mm is small but if the table is something like or I can get it to be then I plan on making a 150mm pallet plate for it.

So its fingers crossed.

100mm-rotary-table.jpg

Thread: Breaking drive belts on super mini
19/11/2018 21:12:20
Posted by andrew lyner on 19/11/2018 18:54:53:

Amadeal sell a brushed motor machine, the Warco Super is brushless and uses different belt arrangements.

Actually the Warco belt has 70 teeth and is 9.5 mm wide so they could be compatible.

But I couldn't find a direct equivalent on Bearing boys site; their stuff all seems to be more chunky.

 

Andrew,

I found the 70 tooth 5mm pitch belt though it is 9mm wide not 9.5mm but I cant see that a problem. How do you know their belts are more chunky..? unless I missed it they dont mention belt thickness do they..? If they are thicker would that be a problem, may be a good thing unless you are wanting a thinner weaker belt as a safety trip..?

Ron

 

Edited By Ron Laden on 19/11/2018 21:13:51

19/11/2018 20:45:48

I understand the reasons why Neil but I would buy my belt from Bearing Boys and that will leave me enough change to buy a pint in my local even at their prices...smiley

Thread: Model Electric Motors?
19/11/2018 16:30:02


I hope you are keeping up with all of this Jason..dont know

Edited By Ron Laden on 19/11/2018 16:30:24

Thread: Breaking drive belts on super mini
19/11/2018 14:15:15

If the Warco belt is the same as the Amadeal belt, Amadeal,s price is £7.50, Bearing Boys price is £2.65, just shows how the prices get loaded.

19/11/2018 08:06:50

Andrew,

I dont know if it will help but have a look at the Bearing Boys Ltd website, go into Transmissions at the top of the page and then Metric Timing Belts. You will need the number of teeth, belt width and the pitch, I dont know if they will have your belt or not but worth a look as their prices are really good.

Ron

p.s. Forgot to say Andrew, when you go into metric timing belts there will be four options re tooth pitch, once you have chosen your pitch, there will be a box on the left. Enter the number of teeth and belt width and if they stock that belt it will come up including price.

Edited By Ron Laden on 19/11/2018 08:18:31

Edited By Ron Laden on 19/11/2018 08:22:27

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