Recent Posts

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Absolutely so Seadog, but not when on flexible reinforced nylon ! So ...... I got on with making a 'flanged 1/2" BSP Tee Piece  :clap:

I found a suitable bit of 4 mm brass plate, marked it out, drilled it, cut it to size (always cut last - more to hold when drilling!) and then brazed it to the Tee piece.

I decided to use Cu-Phos brazing rods for two reasons - a/ I have a bag of it, and b/ it doesn't need any flux when brazing copper or brass - handy stuff but DON'T use it for boiler making. My supply is left over from years back when I was making up custom fittings for the 100 kW induction furnace.

So, wire them together, and have at it with my propane torch. I use MIG welding wire - should be soft iron wire but I don't have any. If you, like me, use MIG wire, anneal it first by flashing the torch over it getting it red hot. In the as supplied state it's too springy and is difficult to handle. Also getting it red hot forms a nice oxide layer which prevents the brazing sticking to it.

Not the neatest item but certainly functional  :thumbup:

. . .just need now to mark out the machine frame, drill and tap it, and fit the hoses and wire it up

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They would normally be plumbed in to copper pipe which would support them. They're no different to standard zone valves in that respect.
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At long last the 24v DC solenoid valves have arrived so I've been able to get a better idea of the volume that they  take up. The various bits of brass plumbing have been to hand for days.

Dry assembling them and hanging them roughly in the place where I want them is the easy bit. The conundrum is to work out how to actually secure them such that not only are they firm enough to resist the inevitable vibration, but also such that they can be easily removed for maintenance.

All the joints will be sealed with Loctite 542 'pipe seal', which means that their rotational orientation can be set without making them actually tight until the 542 sets.

However there is nothing at all on the valves to fix them with. I've considered various methods - 3D printing a 'cradle'  - bending up brackets for the top and bottom 'nozzles' to go through - a bracket with hole that gets interposed between the nozzle thread and the valve - all have their pros and cons.

My current proposal is to braze a lump of brass to the central 'Tee' piece with ears to fix to the machine chassis, and hang everything off that.
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The Design Shop / Re: DRO for Warco Major mill
« Last post by tom osselton on January 22, 2019, 05:31:56 PM »
That is a nice way of doing it!
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The Design Shop / Re: DRO for Warco Major mill
« Last post by PekkaNF on January 22, 2019, 05:04:44 PM »
Two hours on two days -each and X-axis measurement is ready.

Still left final cable routting, but this looks pretty compact.

Not as well hidden than my original plan, but better than I were afraind.

I tried to make all prts to hug as close to machine core as possible.

Pekka
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CNC / dm860h stepper drivers info needed
« Last post by picclock on January 22, 2019, 12:15:40 PM »
Is anyone using these?
For those unfamiliar these are 7.5amp, 100+volt hybrid stepper drivers which can be powered with ac or DC.
There appear to be several versions, am860, 2dm860h etc. But all appear to support the same spec as far as I can tell .
From the 2dm860h data sheet I have found they appear to need special tuning to match the intended stepper motor, via an rs232 interface. Has anyone done this or is this factory set and they run out of the box?
Any info or user experiences much appreciated.
Best regards
Picclock
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Introductions / Re: Presentation
« Last post by krv3000 on January 20, 2019, 06:50:06 PM »
hi and welcome
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Introductions / Re: Presentation
« Last post by WeldingRod on January 20, 2019, 03:44:31 PM »
We love machines here!
I've got a DDCSV that started running the carcass of a Wizard engraver from the 80's, and now runs an Ox with a rotary axis and laser.  Of course, it isnt running now while I relocate a stepper motor to clear the motor mount.

Sent from my SAMSUNG-SM-G891A using Tapatalk

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Introductions / Re: Presentation
« Last post by Unkas on January 20, 2019, 12:26:04 PM »
Hello awemawson, because I am dedicated to the maintenance of companies and I have a machining workshop with milling lathes, drills ... greetings
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Introductions / Re: Presentation
« Last post by awemawson on January 20, 2019, 12:18:28 PM »
Welcome aboard Unkas  :thumbup:

Tell us all about what you are up to and your workshop - pictures are good (800 x 600 please)

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