Here is a list of all the postings Malc has made in our forums. Click on a thread name to jump to the thread.
|Thread: New shaft in Oilite bushes?|
Hi David, I’m still playing around with the drive belt / pulleys to try and improve that side of the job first. I did look at the cost of the bushes and silver steel myself, not too bad. Thanks for that.
Yes, that’s how I’ve done it in the past, just a nuisance. Nice to know I’m doing things right though.
Hi David, the shaft is about 4” long and 3/4” outside diameter. The bushes in the casting are 7/8” outside diameter.
Thanks for the heads up about the oilite bushes fellas. Not being a “Proper” engineer these are the sort of things that make me nervous when it comes to fitting bushes to castings. The difficulty in accurately measuring an inside diameter doesn’t help in these cases.
Morning all. Thanks for the interest, very much appreciated.
Ian, I had considered turning down the shaft but I think it is too hard, I certainly can’t make any impression on it with a file.
David, your silver steel idea is a thought. I will have to look into the cost of the bushes and silver steel etc.
Before going too far I would like to sort out the drive belt problems they all seem to have, apparently some on this forum have used PolyV belting. I suppose I am wondering whether the money spent will be worth it. Thanks again all for the replies.
I am looking into replacing the worn bushes in a Kennedy hacksaw with oilite bushes, however the shaft is also worn and I would like to make a new shaft. The question is, could I make the new shaft out of mild steel or would it need to be made from something special? I am also wondering how good the finish would need to be when making the new shaft on the lathe?
|Thread: Need assistance on wiring for my lathe motor|
Sorry but I don’t think the diagram went with the message. Send me your Email address if you would like it.
My motor has the same lettering as yours but I have used my own colours of the cable I used between the motor and the Dewhurst switch. I will try to send you a copy using the “Message member” at the bottom of your post but I don’t usually have much luck on this site.
I have an ML7 running on a Crompton motor with a Dewhurst switch. I have a diagram of my set-up (Word document) . If you PM me I will email you a copy if you think it will help.
|Thread: ML7 refurbishment|
Hi Dave, I have an ML7 of a similar age as yours. Presently having the gear cover off I thought I would put a picture in my album of the range of gear pitches. However I cannot seem to upload a picture try as I might. I use the following gear train for normal smooth turning: MANDREL, driver 20T. 1st STUD, driven 65T, driver 25T. 2nd STUD, driven 70T, driver 20T. LEADSCREW, 75T. This gives a feed of 0.0037” per rev. There is a finer feed giving 0.0018” per rev but you need a 12T drive gear on the mandrel, as I don’t have one I have never tried it. Hope you can make sense of that lot. If you would like the picture I tried to upload I will email it if you PM me.
|Thread: Digital angle gauges|
Many thanks to all of you fellows for the benefit of your experiences and opinions. Always worth asking for help on this forum. Thanks again.
Evening all, I have been looking at buying one of those digital angle gauges. Wixey seems to be the original but I see there are various cheaper versions about now so I wondered whether any of you fellows have any experiences of either the Wixey or the cheaper versions, any opinions will be welcome. Thanks all.
|Thread: Myford Ml7 micrometer dial.|
Yes, I had forgotten I had made a dividing device using the lathe screw cutting gears. I cut the graduation marks just using a V shaped tool on its side in the tool post and moving the cross slide along the bed up to a pre-set stop, several shallow cuts each time. I think there is a picture of one of the finished dials in my photos. I seem to remember I also made a jig to guide the number stamp for punching the numbers. I have seen far more professional looking jobs on these pages but for a non engineer the dials turned out well enough and have certainly been useful and accurate enough for me.
There is a detailed article on making these in the Geo.H.Thomas book “The model engineers workshop manual” (P. 164). I made a pair for my ML7 several years ago and have found them a worthwhile feature.
|Thread: Turbo CAD Query.|
Many thanks Gary, my sanity is restored. I spent some time drawing 2D house plans a couple of years ago and became reasonably capable with the program but am trying to make a comeback with the help of the Paul Tracey videos. Very impressed with your instructional techniques, screenshots with pasted directions, very effective! You have certainly got me out of a hole. Many thanks again.
I have been trying to get into TurboCAD (Deluxe, ver: 16.2), but today I am stuck. I have just started playing with 3D and changing the workplane before adding shapes to other shapes. However, when I now try to draw an ordinary polyline it appears as a parallelogram. I have tried the polylines in another file and it works perfectly so I assume I have done something stupid. Can any of you fellows offer any suggestions?
|Thread: The cultural status of engineers in the UK|
Just to lighten the mood lads:
Three graduate engineers were discussing who might have been responsible for the design of the human body. The first one said "Think of all the joints etc. it must have been a mechanical engineer". The second one said "No no, what about all the electrical impulses and nerves etc? It must have been an electrical engineer". The third graduate was shaking his head, "You are both wrong, the human body was designed by a civil engineer - who else would run a waste pipe through a recreational area"?
|Thread: New legislation that could affect us all.|
After a very lengthy "Lack of convenience" due to refurbishment of one of the college toilets it was announced that it would finally be re-opened the following Friday. Some comedian felt that the occaision deserved a better billing, however the management were not amused!
As a result of a recently passed motion
The Organisers : B.A.D. Skidmark
bid you welcome to :
FRIDAY 15TH JUNE
To mark the opening of the new Staff & Student relief offices.
Heavy refreshments will be served to maintain a lively attendance
(Prices reduced by a tird !)
Entertainment By :
“Sheila Shitz & the Bog Trotters”
Displays By :
(not to be missed !)
|Thread: The Engineers Emporium - Red Wing hit and miss engine|
When I was looking for my first lathe I rang Engineers Emporium several times, each time I was promised a call back but never received one. As the firm is local to me I decide to call in. On arriving I was asked whether I had made an appointment, when I said no I was asked to leave. Needless to say I took my business elsewhere. Wouldn’t touch them with a barge pole personally!
|Thread: Myford ML7 - Size of Mandrel Through Drilling?|
Mine is 0.625”, serial No. K 76235.
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