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Re: Buying the right motor in the UK? - 16 years ago

Hey Hazel, I'm in a similar situation to you, although I have been following reprap for about a year now, I have not actually got a huge amount done. I've learnt a lot though, and I generally like to research things up front rather than dive in, saves on the 'oh damn, did not think of that' moments. I was originally going to build a McWire too, but after working out the cost of pipe etc, and re

by Lee Freyberg - Reprappers

Re: Buying the right motor in the UK? - 16 years ago

@Hazel a holding torque of 45Ncm (0.45NM) as you quoted seems a bit low - the original steppers specified were around 1.0NM so twice the torque. I'm not sure how much a Darwin actually requires, but I would go for at least as much as the original. These are what I bought: And they seem pretty close to what other people have, and to what makerbot / RRRF are selling though YMMV. What sort of

by Lee Freyberg - Reprappers

Re: Buying the right motor in the UK? - 16 years ago

@Matt Thanks for the info and the URL, had not seen that supplier, looks like they have a good range at reasonable prices. I was not planning anything as big as yours, so the 1Nm 23s I have will hopefully be fine - I can always use 2 lead screws for the x axis if I need more torque.

by Lee Freyberg - Reprappers

Re: Buying the right motor in the UK? - 16 years ago

@Hazel There is a decent amount of information here However I don't think there is a definitive spec per say, rather you need one that is compatible with your electronics and power supply that has enough torque. The original ones used were 0.9 degree rather than 1.8, but I believe there is a firmware switch to use 1.8s with half stepping - its what most people seem to be doing given the high

by Lee Freyberg - Reprappers

Re: Buying the right motor in the UK? - 16 years ago

@Matt Darley I looked at motioncontrolproducts also, but have not bought anything from them - any issues when dealing with them? I'm looking at going the same route as you, with a basic router table; do you really think you are going to need that much torque, or are you planning something big? Also, what are you using for the lead screws and rails? The standard DIY threaded rod and aluminium c

by Lee Freyberg - Reprappers

Re: Buying the right motor in the UK? - 16 years ago

Yep, that was me. The caveat is that I have not tried to use them in a reprap yet - have not got that far; but as far as I can see they fit the spec. They do have a D-Cut shaft though, which I am not sure the standard reprap couplers will cope with, but that would be simple to fix. The also have lots of 3 available, but with £12 postage per order I bought 2 lots of 4 as I am sure I will find a

by Lee Freyberg - Reprappers

Re: RepRap Sales - 16 years ago

Just because something is open source does not mean there is no cost involved, especially for a hardware product like a RepRap. As we are all aware, a full kit of parts for a reprap cost a reasonable about in both time and money to organise; and as bits from bytes and makerbot show, there is a thriving market for 'pre-built' kits. Licencing wise, there's no problem with doing this, you just need

by Lee Freyberg - General

Re: Idea for solution to chicken and egg problem - 16 years ago

The malleable iron pipe _is_ available in the UK - just not at homebase / b&q / wickes. It's not used for central heating here as it seems to be in the US so it's not a DIY item, but it is used for air conditioning and other plant piping. I posted a bunch of online retailers that carry it here It's slightly more expensive than in the US, but you should be able to get all the bits you need

by Lee Freyberg - Mechanics

Reprap in the news again... - 16 years ago

Well, if you can call El Reg the news...

by Lee Freyberg - General

Re: Licensing issues discussion? - 16 years ago

It does indeed seem very odd that the whole thread, and no others, has just vanished. Still, in the absence of any information to the contrary, I am going to assume that it's simply a technical fault rather than censorship (why would anyone want to censor a reprap forum post!?). If someone did purposefully kill it, how about you let us know why you killed it so we don't waste our time trying to c

by Lee Freyberg - General

Re: Starter Kits - 16 years ago

When I looked a while ago I found a bunch of online sellers in the UK that stock the malleable iron pipe and fittings required for the McWire bot. Prices varied a fair bit but from memory it looked like you could get all the bits for < £40 inc delivery. I have not bought any yet, never enough time, but you lot might find them useful. Given that everyone seems to find it tough to find parts i

by Lee Freyberg - Reprappers