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Member postings for John Murphy 3

Here is a list of all the postings John Murphy 3 has made in our forums. Click on a thread name to jump to the thread.

Thread: Chester Conquest mini mill
09/05/2018 16:48:29
Thanks Russell
08/05/2018 13:55:35
Funny you said that ketan , I trammed it yesterday and just used it today. Went through bright mild steel with an 8mm 4 flute with 1mm DOC. So very pleased with that. Thanks again ketan for your responses it really helped.
07/05/2018 22:40:17

As you can see from the video its off quite a bit fwd and aft. The starting point at 0 is also just about 0 when I swing it over the other side of the table to check the tramming. It was way out before I reset it. Also the end of the video I'm putting pressure on the head and also pushing/pulling the column. That's the amount of flex/movement. The head gibs where locked and also Y where locked.

How do people adjust fwd and aft ? Shim the head or the base of the column. Also any idea why its flexing so muchhttps://youtu.be/xmvdDNTE0ls

Edited By John Murphy 3 on 07/05/2018 22:40:51

07/05/2018 18:33:08
Thanks John Rudd didn't know they came with a 550w motor.

Old Iron thanks, yes I'll make something up on the lathe. Was curious if they came that way originally. I'm nearly sure it came with a plastic cover plate , makes sense if the lead screw wasn't even supported.

Tramming the machine at the moment. Noticed a lot of flex fwd and aft pulling or pushing the column. I'll try get a clip of it later. How do you tram them fwd and aft ? Shims ?

Edited By John Murphy 3 on 07/05/2018 18:33:28

07/05/2018 14:48:58
That's a nice big motor , what board is running it? So your lead screw , is it one machined part , is is there an extension on the end of it to bring it out to the end of the table ? I can machine up a new end plate by copying the other side. I was looking up the Bluetooth dro, I'll also do this in time , I have adruino uno r3 sitting idle.

Edited By John Murphy 3 on 07/05/2018 14:50:58

07/05/2018 12:21:24

Thanks Russell, are you using ball screws with your conversion?

Another thing a noticed is the lead screw for X doesn't come all the way up to the edge of the table. It still has the full range of movement though (300mm)

img_20180507_095909.jpg

06/05/2018 13:43:12

As it stands of last night, crappy quality pic. I really like this idea in the link(what Ketan said). http://robertsprojects.blogspot.ie/2013/04/mini-mill-solid-column-conversion.html?m=1

Just attaching the column. Only problem I see is trying to figure out how to mount the base in the ML7 to machine the rear of the base flat lol. I made a quick wheel handle for the Y as it was missing. Also need bellows and a gib lock for the X. I need to take the gib out of the Z and have a look at that, then its tramming everything and make some cuts

img_20180505_234905.jpg

Edited By John Murphy 3 on 06/05/2018 13:44:41

Edited By John Murphy 3 on 06/05/2018 13:45:44

Edited By John Murphy 3 on 06/05/2018 13:50:38

06/05/2018 12:56:01

The more i think of it i Should of just plunged cut a slot instead of milling a full slot, but it seems to be fine and feels better than it was.

Edited By John Murphy 3 on 06/05/2018 12:56:37

05/05/2018 18:14:10

Thanks very much for the all the help guys , I milled slots in the gib strips and it helped quit a bit. Looking at the base of the mill it looks quite easy to make up an adapter to fit a solid column and I think that will be the route I will take after I use the tilting column for a while. 1525540337175.jpg

05/05/2018 02:23:29
Ketan, again thank you for the lengthy reply , if I could take 1mm in steel I will be very happy. Regards the drill chuck and collect chuck. That is the pic that was used by the seller in the for sale add. I'll post updated pics tomorrow and I'm aware of the basics with milling. I have an ML7 lathe in which iv done milling with. I was only able to take .2mm doc so if I'm able to take 1mm in steel that would be great. Ketan do ye sell those end plates on the tables? Old iron , by the sounds of it I'll be very happy with this thank you for the info.
04/05/2018 19:51:38

1525460599781.jpgAlso I'm missing the left hand side table cover plate. The previous owner took it off and lost it. Was easier for him to clean chips out of the table. Was this plastic or metal??

Edited By John Murphy 3 on 04/05/2018 19:52:31

Edited By John Murphy 3 on 04/05/2018 20:05:25

04/05/2018 19:43:12
Neil , doesn't matter what it looks like once it functions correctly
04/05/2018 19:28:45
No I bought this machine second hand cheap. Seems to be in good condition. I have the table saddle etc removed to check things . I'll remove the head tomorrow and check that. Yes ketan that was another option i was thinking , I could just make up an adapter and fit just the column. I noticed all the gib strips where not machined correctly for the gib screws , so I'll sort that before I put the table back on. I see ye sell the sx2l base as well. I have a scrap bit of c channel steel in the garage. Make up a brace and see what its like. But I'd imagine it still would not be as rigid as the solid column due to the increase of thickness but also even the braced tilting column still has that crap bolt going throw it Really bad design. What can these little mills DOC be in steel and aluminium? With let's say a 4 flute 10mm end mill.

Edited By John Murphy 3 on 04/05/2018 19:39:27

Edited By John Murphy 3 on 04/05/2018 19:54:30

04/05/2018 11:30:52
Neil fantastic , thank you
04/05/2018 11:30:14
Ketan thank you very much for the lengthy reply much appreciated, how do I tell if it came from the sieg factory? Its looks the very same as the original x2 but with more travel and bigger table. 130x300 travel with 460x120 table. Link below. I don't mind doing work to the base of the column but dovetail work would be outside my skills.

http://www.tphmachinetools.co.uk/products/1501-new-chester-conquest-mill-super

Edited By John Murphy 3 on 04/05/2018 11:31:13

04/05/2018 10:22:27
Hi Neil , have you pics of your bracket? I rang arc yesterday, was put off by them saying it may need machining/filing/scraping , the more I think of it I think it wont need machining. The chester is 130/300 travel with 460 x 120mm table which says to me its the bigger table than the original x2. So the the Arc conversion kit will be a straight swap.

Edited By John Murphy 3 on 04/05/2018 10:23:15

03/05/2018 21:48:28
Hello everyone. Im just after buying a secondhand chester mini mill (x2).could anyone be able to answer a few questions I have with this mill? Its an x2 mill with a tilting column. Has a gas strut, 130mm x 300m travel. The motor is a 350w version with a xmt 2335 control board.

1. Can the solid column sold by arceurotrade be a direct swap or will the dovetails need machining to fit. Or would I be better off just making up a bracket to lock the column and brace it.

2. Is it true the 350w is hobbled by the control board so it won't break the gears. If so are there mods that can be done to get the the full power for the motor.

I'm planning to get a belt conversion.

I'm mainly going to be using the mill for motorcycle stuff. So I'd like to be able to fly cut and hopefully be able to make 1mm DOC in steel.
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