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Member postings for AStroud

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

Thread: BCA jigborer motor
19/12/2020 15:50:48

Mine came with a 1ph motor fitted (3kw !!). It had been fitted by someone drilling mounting holes in the column about 5 1/2" down from the top mounting holes and I am guessing they must be tapped. Spacers are used to align with the pad. Otherwise I would have thought an adaptor plate would suffice.

Edited By AStroud on 19/12/2020 15:51:05

Thread: My workshop improvements
19/12/2020 10:40:44

here's mine, seeing others makes me realise I should update the lighting


Edited By AStroud on 19/12/2020 10:47:40

Thread: Stuck oil filter
09/07/2020 13:41:30

Here's what I did to remove a stubborn filter.

Put 2 jubilee clips over the filter body with their worm drives aligned and tightened up.

Found a piece of pipe with id the same as the jubilee clip bands' od. In one end of the pipe cross drilled for a tommy bar. On the other end notched out a circular segment of length such that the clips' worm drives would fit into it. Put the pipe onto the filter with the notch around the worm drives and then used a tommy bar to unscrew the filter.

Thread: MEM Corliss progress
12/06/2020 09:05:19

Hi Mark

It is a Mk 111 about 35 years old, serial number is xxxxxE so in imperial. I managed to get it in good condition, looks like it is on its original belt and most importantly with some accessories including collets. I love it, only wish it was a bit bigger as we do with most of our machine tools.


11/06/2020 13:55:53

Thanks for the comments.

yes, one of my cheats on the MRM drawings, the flywheel is from a billet. Stretched my S7 and BCA to accommodate it but I am happy how it has turned out. For the first time I finish bored for the crankshaft and have been rewarded for what looks like a wobble free flywheel.


11/06/2020 09:12:16

First set out of the main assemblies of my Corliss, based on the MEM drawings

mem corliss4.jpg

Thread: Size of groove for O rings
05/08/2019 17:36:19

according to my James Walker design notes for O rings

for 0.125" cross section dia o ring

groove width = 0.159" - 0.164"

max piston groove dia = min cylinder dia minus 2 x (0.110" - 0.114" )

min piston groove dia = max cylinder dia minus 2 x (0.110" - 0.114" )

The design notes are available on the net and are well worth hunting down.


Edited By AStroud on 05/08/2019 17:38:05

Thread: What mills have you had
21/07/2019 12:08:32

A BCA Mk 3 if it qualifies as a mill. I have it because of space limitations and it is a joy to use. Downside it is limited to small work but it suits my projects.


Thread: BCA Jig Borer MK3
21/10/2018 16:10:03

Yes I do, but it is a reprint purchased from the website, quite pricey and a bit light in information but if you are a BCA enthusiast a must have I think.


21/10/2018 14:41:23

The spring keeps the belt at the correct tension, there is a clear instruction in the instruction book about adjusting the tension arm to the correct fixed length so the spring is compressed to keep the belt at the correct tension.


21/10/2018 12:32:11

Hi William

I have a BCA Mk 111 and have just removed the spring , these are the measurements

L = 2.75 ins

OD = 1.03 ins

wire dia = 0.103 ins


bca mk 111 spring.jpg


Hope this helps, Andrew

Edited By Andrew Stroud on 21/10/2018 12:34:54

Thread: O ring Pistons cylinder Clearance?
25/09/2018 20:17:18

Hi Robert

I suggest you download a seal manufacturer's design guide where you will find advice on the design of housings for seals, including grooves for O rings. I have a guide from James Walker , would not be without it.


Thread: Knurling
06/11/2012 20:12:33

Thanks for all the comments, some good advice, I hadn't thought about looking in Machinery's, I see there is a lot there.

I am applying pressure above and below the stock, my knurling tool does have a graduated adjusting screw so I can set the depth cut, but I think doing by feel and inspection is probably the best way. I will raid the scrap box and start practicing.

03/11/2012 12:27:53

I would like general advice please on how to knurl, having just purchased a caliper type tool with a diamond pattern for my S7. I understand the need to use slow speed and coolant but what I am not sure about is the number of passes to make.

One book talks about not cutting too deeply at the first pass and use a 10 thou cut, but if you want to make a deeper knurl am I correct in thinking the tool must be kept in contact with the work and not wound clear before increasing the cut ? Otherwise I cannot see how the tool engages exactly with the cut made in the first pass. Is it advisable to knurl with only 1 pass all the time ?

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