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Member postings for colin hawes

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

Thread: Reminiscences
21/09/2020 11:58:22

Silly Old Duffer; I don't know about "Lady-Wee" but ,from experience, I can confirm that a dog bitch's can kill grass. Colin

Thread: which older mill to complement a ML7?
21/09/2020 11:47:01

Round column mills are often a pain as it is generally unlikely that you can raise and lower the head to accurately arrive at the same co-ordinate position: I would definitely recommend a vee slide column. Colin

Thread: What plastic for a mower deck
06/09/2020 14:20:57

I repaired the rusted through deck on my mower with fibreglass on the top and inside (like a sandwich) two years ago and it is still excellent now.

Thread: Stainless steel
26/08/2020 11:11:09

Worn out windscreen wiper rubbers contain two inserted springy stainless steel strips ~ 2.5 x 0.8mm x blade length and easily removed .More free metal for the model making supply!

Thread: Welding precautions
17/07/2020 12:18:33

Thanks everybody for the response to my query, it seems I have been too apprehensive about welding near the rear of a car but as a beginner in this sort of repair I have been pleased to have your inputs and anecdotes. Colin

Thread: How safe is holding stock with jaws reversed on lathe
16/07/2020 12:26:53

Depends how thick the tube wall is, thin walls can easily be distorted under cutter force causing the chuck to lose it's grip .Colin

Thread: Welding precautions
16/07/2020 12:19:31

When garages weld on new sills do they remove the petrol tank or is this considered unnecessary? Colin

Thread: Poly-Vee Belts
16/07/2020 12:11:10

I have been using a toothed belt on it's smooth side to drive my Drummond lathe for years as I reckon it gives a better grip than leather and no changes in it's tension. Colin

Thread: Boring problem
09/07/2020 18:23:56

This can be aggravated by the tool not being sharp enough so that the rear of the tool is sharper than the leading edge and also if there is any slack in the carriage adjustment causing it to twist when the tool is extracted. Colin

Thread: Workshop Gloves
31/05/2020 17:29:21

If a machine catches even a thin glove it can drag your hand in long before the glove has had enough time to tear even if it is rotating at only 100 rpm. Don't do it ! .It is easier to clean your hand than to replace it. Colin

Thread: Possible machine hoist?
29/03/2020 14:22:32

I store my heavy chucks on a shelf behind the lathe with a short ramp so that I can roll them into place at the right level to fit them . I have done the same with a heavy dividing head by the horizontal miill .I'm no' so young as I used to be! Colin

Thread: Holding screw-end end-mills/slot-drills
19/11/2019 12:28:30

ER collets have a wide clamping range for each nominal size but you should use one that is the correct size for strongest grip. Colin

Thread: DIY glass fibre pulley?
06/10/2019 10:50:41

My lathe and horizontal mill both have three step flat belt pulleys that I made many years ago from sheet metal discs with welded on sheet metal bands for the belt to run on. Tube is welded though through the centre. Perhaps I was lucky as they both ran very close to true. These pulleys have a largest diameter of about 9". Colin

Thread: Hand or Machine Reamers?
04/10/2019 13:48:30

Hand reamers are only useful for opening holes such as little end bushes in situ where it can't be done on a machine. Colin

Thread: What are members thoughts on Gap Bed lathes ?
04/10/2019 13:39:49

I would always prefer a gap bed lathe for its versatility. Colin

Thread: Why does the micrometer have a second knurled segment
05/09/2019 14:29:35

When you have acquired the skill after frequent use you will find the "second" knurled knob gives a better feel on precision work and also that feel lets you know if a bit of debris is causing a false reading. Colin

Thread: 0.300" & 0.400" 28TPI Tap
27/08/2019 15:41:17

BSP 28 tpi threads come close. Colin

Edited By colin hawes on 27/08/2019 15:42:11

Thread: Adjustable 3-jaw chuck designs
06/08/2019 10:29:12

I have a cheap 3 jaw chuck that is quite accurate on some diameters of stock and much less on others, the accuracy varying between 0.001" and 0.005" T.I.R. Having checked the parallelism between register, back plate and chuck faces I come to the conclusion that the scroll is likely to be the cause of the variation so it seems that for one-offs I might as well use an independent four jaw chuck as attempt to adjust the self centering one...……I am hoping to improve things now that I have discovered small burrs on the scroll Colin.

The scroll needs to be checked for radial slackness.

Edited By colin hawes on 06/08/2019 10:33:04

Thread: Do you use Chinese HSS?
29/06/2019 10:30:00

Be wary of the description HSS. It's been used as a suppliers name in the past. Colin

Thread: What method do you use to find center height for your lathe bit?
29/06/2019 10:26:02

Estimation followed by adjustment if necessary. Colin

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