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Member postings for Ian Parkin

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

Thread: Bent woodworking lathe spindle
25/09/2020 14:09:33

Can you post a photo of what you have and some rough dimensions or what model lathe it is.

i make spindles and chuck adapters for many ww lathes

Edited By Neil Wyatt on 25/09/2020 14:19:38

Thread: Vacuum Pump Advice Please!
24/09/2020 19:15:16

I’m sure that the fibre vanes need lubing

small offset machines used to have “Gast “ pumps which had fibre vanes and a small (50ml) glass jar on the inlet side with a pipe cleaner into the oil and inlet to lube the vanes

Thread: What sort of light source to use a strobe disc?
24/09/2020 17:50:27

Well this guy insists he uses a desk lamp with a filament lamp in...has he got superhuman vision so he see a bulb cooling and heating 50 times a second?

and also in factories he wired filament bulbs across the 3 phase to avoid strobing...which again I’ve never heard of..other than to balance the load... fluorescents yes but not GLS bulbs

Edited By Ian Parkin on 24/09/2020 17:52:40

24/09/2020 17:35:06

What sort of illuminators were used in record turntables?

Thread: Vacuum Pump Advice Please!
24/09/2020 17:33:52

I do deal with a lot of pumps like this in the print industry and never considered them to be high vacuum

usually the ones i work with are dry with carbon vanes

older ones were steel bladed running with oil and an oil separator a bit like a hydro vane pump

anyway check that the vanes are free to slide in and out and don’t expect much of a vacuum with it..

Thread: What sort of light source to use a strobe disc?
24/09/2020 17:26:51

In a light hearted discussion on a woodworking forum what sorts of a light source do you need to use a stobe disc or indeed not to use near rotating machinery?

one chap ( a very respected member) insists a standard filament lamp will suffice?

I say anything other than a filament lamp....

Thread: Quality Control ?
24/09/2020 15:49:58

So was it a battery problem or the can opener?

batteries now seem to have a shorter +ve teat than they used to

Thread: WARNING Scammer
21/09/2020 21:50:14

Nothing wrong with putting cash only for collection items

you have to offer paypal you dont have to accept it

it would limit your buyers immensely if you didnt take paypal for postable items

Edited By Ian Parkin on 21/09/2020 21:50:42

Thread: Blowtorch problems
19/09/2020 20:19:33

I’ve ordered a repair kit @ £29 rather than a new torch at £95

the only bit it doesn’t include is the black body casting by the looks of the kit

19/09/2020 19:23:01

The jet is clear

the air holes are open

if i turn the gas knob down i get a good flame but not a fierce flame like i used to get

ad0260dc-0930-448b-adac-21b05a05212b.jpeg

19/09/2020 18:54:56

Any ideas why my rothenburger blowtorch has suddenly started refusing to ignite in spite of what looks like a good spark and also the flame is like this

de2758dc-f0ea-4b8a-a040-52642d95f3a4.jpeg

Rather than as before the flame went down to the end of the nozzle

it just started doing this having been fine for well over 6 years

Thread: Ideal Guillotine
18/09/2020 05:23:09

Bill

the guillotine in my video actually tried to cut through a steel ruler and it shattered the tungsten blade about 4 inches in length

blades are about £1200 so expensive mistake

ruler survived

never seen any wrong material detectors on any paper cutting guillotines

Thread: Tachometers sensor magnet
17/09/2020 16:30:57

I did the job today just ground a flat on a 20mm silver steel shaft and placed the magnet and it stays there even at 1000rpm

its been running an hour or so now

I had it in my head that a magnet would have need putting in a non ferrous collar to work adequately

thanks for all the help with this

Thread: Ideal Guillotine
17/09/2020 16:26:34

I was at one of my customers and did a short video of a real sized paper cutting guillotine

this is a polar mohr Guillotine with side lifts air tables jogger and palpating attachments

see how easily the operator moves around perhaps 80 kg of paper and the power with which the machine cuts.

this has a 5kw motor spinning up a flywheel weighing 300 kg

the knife in this one is a tungsten tipped blade which lasts about 2 weeks whereas a HSS one would only last a day or so

i don’t know whether i can post links now but search on YouTube for “polar guillotine sheffield”

Can i post links to my video’s?

15/09/2020 21:34:00

Blades easily available but about £150 now

its probably a 1980’s machine that one so not old

Thread: Tachometers sensor magnet
15/09/2020 18:22:14

I need to fit a tachometer on a machine in the morning

how do i fit the small button magnet to a shaft?

if i glue it to a mild steel shaft does the steel sap the magnetism ?

Thread: Ideal Guillotine
15/09/2020 18:19:02

I worked on the electric versions quite a lot in the past

the manual ones don’t really have any safety features as such

the blades are either carbon steel or high speed Steel on ideals so not hardened

anything you need to know ask away

blade sharpening at a couple of places in sheffield

Thread: Mk1 Colchester student clutch
09/09/2020 19:54:14

The clutch if fitted is outboard of the pulleys away from the headstock

dsc02094 (medium).jpgYou can see it out of focus behind my home made brake...if you have a clutch you cant have a brake usually

08/09/2020 16:11:14

You can have a clutch fitted

does your motor run then when you lift the start handle the spindle starts?

or when you lift the handle does the motor start? And the spindle?

if you don’t have a clutch you should have a brake in the pulley area which could be giving problems

but first I’d look at your drive belt/s

Thread: Hermes Parcels
06/09/2020 13:38:25

The list of prohibited items is all encompassing there’s hardly anything that they will carry

i can imagine if you sent a glass item and it got damaged then that’s ok you lose. But if they lose the item what was in the package is immaterial...they lost it

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