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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: Telephone / Internet Scams
18/02/2019 07:59:43

I had a call the other day re stopping unwanted calls.

the Indian sounding woman was most insistent that I was responsible for the landline bill and I was a homeowner and younger than 85.

i responded with well I’m 87

call ended immediately

whats the method in only targeting under 85 year Olds?

Thread: Overload trip
08/02/2019 21:06:03

Remember that the current draw for this motor is only 33mA so even a fuse will struggle to protect that

I’d agree that some way of detecting a stoppage would be best

Thread: What Did You Do Today 2019
14/01/2019 21:02:24


They made a mistake on the listing for the sets and cancelled the listing relisted now with proper price for the sets

Thread: depleted batteries
11/01/2019 09:43:15

I saw a video on YouTube about someone with the same problem

He discharged them (if not already) then put them in the freezer for 24 hours then let them defrost well then recharge in the normal way

Then all was good (apparently)

Thread: Anyone near loughton essex?
24/12/2018 11:57:27

Is there anyone near Loughton who could pick up an eBay purchase and post it on to me?


Thread: Wall Storage Recommendation
22/12/2018 19:32:24

Bisley *. multidrawer filing cabinets 15 drawer ones I use

I have about 20 of these scattered around

you can get them for about £20 upwards depending on condition


* other brands available

Edited By Ian Parkin on 22/12/2018 19:51:50

Thread: Unusual Tool
02/12/2018 11:26:28

looks like a leather cutter you place the shoe on the work press with your palm on the knob and the blade comes down and just goes under the material and cuts as you glide the tool along your cutting line..

does that seem plausible as i’ve Not seen the blade

Thread: Wooden display base
20/11/2018 18:45:08

If you just want a piece of English or European oak the size that you quoted let me have your address and i’ll Drop a piece in the post for you

i can do it rough cut ,planed, or planed sanded and finished

Thread: Colchester Master 2500
18/11/2018 09:57:05

As i said earlier

if you take the end cover off and defeat the safety microswitch if there is one

run the machine and use the half nut lever to engage and as you say stop the lead screw and drive shaft.

it will be obvious where the problem lies

if the whole gear chain stops the problem is at the headstock

if it stops but the shaft that the first gear runs off still spins its a shear pin there ( like earlier cols)

if the gears run but the input shaft to the gearbox stops its a shear pin there

if everthing runs its a problem within the QCGB

17/11/2018 17:17:28

Just take the end cover off and use the lathe ....trying to stop the lead screw turning as you described should see where its broken

Edited By Ian Parkin on 17/11/2018 17:18:01

17/11/2018 17:16:04

well on my Colchester lathe (earlier than yours) its on the first gear drive next to the spindle

17/11/2018 16:51:20

Sounds like your safety pin has broken

Thread: Cheap 3D printers
08/11/2018 14:04:58

Yes to all

slight proviso ...I've found that abs needs to have a warm environment as well as heated bed so build an enclosure round it


Thread: Cutting an unlisted thread on colchester student
04/11/2018 19:36:38

Sorry double post

Edited By Ian Parkin on 04/11/2018 19:37:23

04/11/2018 19:36:37

Actually I must try the setting 2 across from 3mm pitch and see what results could there have been a brainstorm in the Colchester factory and they left off 1.75 and 3.5 off the chart which surely were widely used in the 60’s


04/11/2018 19:27:09

Thanks Brian

i have ordered some pulleys so I can hopefully cut my 3.5mm pitches

the student handbook does go through how to cut different than what’s in the gearbox but it assumes that you also have a complete set of change gears and the instructions slightly gloss over how to calculate metric pitches

Thread: The right sort of paint!
04/11/2018 12:52:06

Barbeque paint works well

from b&q

sorry missed Hoppers suggestion 

Edited By Ian Parkin on 04/11/2018 12:52:44

Thread: Cutting an unlisted thread on colchester student
02/11/2018 17:21:11

I do have the original gears (only 3 )but usually leave the belts on as less noise and no need for setting clearances.

so basically I need to set the gearbox to say 1.5mm or 3mm and apply a 1.4 increase to the gear train or pulley ratios

02/11/2018 13:59:00


your sum above should be presumably

1.5 x 49/42 = 1.75

not 1.15 ?

As its easier to source pulleys than gears what size should the driven one be as i cant fit anything larger than a 48 tooth as the mainshaft is close

02/11/2018 13:04:36

Thanks Jason

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