This is very exciting work and looking very close to a working solution excellent.by Ian Adkins - Polymer Working Group
Forrest I would take a serious look at using a lead screw it's more expensive than rod but is designed for the job, my CNC router runs at 40mm/sec and motor noise is all you hear.by Ian Adkins - General
If it is a clean break try to super glue the parts back together it seems to make a very strong bond as the surface area and contact between the parts is goodby Ian Adkins - Wanted
Excellent news I'll keep a look outby Ian Adkins - RepRap Host
To test Minicom disconnect your RS232 cable from the power comms board and with a piece of wire connect pins 2 & 3 together directly on the end of the cable, if you have a spare 232 connector plug this into the cable and solder its pins 2 & 3 together if it is easier. Then repeat your Minicom test if it doesn't work then your error is in the Minicom settings. If Minicom is working OK recby Ian Adkins - Controllers
Hi what's the current state for the Arduino firmware? and is ver 1.1 complete? or do i need to get the latest from SVN and if so where?by Ian Adkins - RepRap Host
Hi Reece The Z idle pulleys should be held just by clamping between nuts on the threaded rod no need for any other fixing, the Y idle pulley should be grub screwed on and I'm sorry to say this rod should not be threaded it will eat the Y Bearing very quickly, all rods and motors should have a small flat/ dimple made for where the grub screw goes this prevents the need to over tighten the grub scby Ian Adkins - Mechanics
It's pretty much one of the standards used for plastic welding equipment the others being bigger, this means they is some availability for different plastics quite cheaply (but not CAPA ) also conversion to 3mm filament is easier due to there being companies setup to do this. We will try to go the granule feed as this is the cheapest for raw material.by Ian Adkins - Plastic Extruder Working Group
Axminster Tools do a range of DRO based on caliper design for fitting to milling machines they go to 300 or more i think i use some smaller ones on my lathe and they will work on the full length of the rule as in longer than the spec says :-) Not sure about outputs :-~by Ian Adkins - Mechanics
Trying looking at nopheads blog www.hydraraptor.blogspot.com he has lots of very good information on flow rates, temperatures etc.by Ian Adkins - Reprappers
There will be VAT and also depending on the carrier a handling charge this can be anywhere forby Ian Adkins - United Kingdom RepRap User Group
As far as I can see from the Pic there is no Max232 fitted just an empty socket the echo test requires the MAX232by Ian Adkins - Controllers
Yep got same result as Ian maybe it's just an Ian thingby Ian Adkins - RepRap Host
Bruce eD is coming to the US i think, it might be worth seeing if he has an old bit of foam base from their commercial machine just to try as they use ABS. I will try to remember to mention it to him when I see him next.by Ian Adkins - Plastic Extruder Working Group
The data sheet for the PIC is 20mA they will push a little more but I would spec to run max 18mAby Ian Adkins - Reprappers
With the TX & RX silk screen facing you connect the right hand pins of each connector together you can use just about anything this is a simple one time test so if you have small croc clip on a test lead use this be careful not to short to the adjacent pins as these are grounded and will stop the test working.by Ian Adkins - Controllers
Well said Sebastien.by Ian Adkins - General
Both those motors are 12V 0.4A motors these probably won't give good performance if driven from 12V. They are also 56mm long not 51mm as standard RepRap. They will fit but are not exactly true spec (you pays your money and takes your choice!).by Ian Adkins - Mechanics
Andy That is exactly the setup I love (and use) except I'm all windows but good to know it will work on Linux. I also use the CCS complier just for speed with its mostly good PIC functions. Always ICSP programming, I've spent too long debugging a bad socket contact Zach I agree regarding the UCB so I've added one as all the ICSP pins are already broken out I will post on this soon in the Blogby Ian Adkins - Mechanics
I don't think there is a likely to be a solution to the warping except physical restraint. This is exactly the problem you have when welding steel when the filler cools it shrinks and "pulls" the welded item with a surprising amount of force. This is a very well understood problem and the only solutions I'm aware of are physical restraint with bracing or welding form both side at the same time (by Ian Adkins - Plastic Extruder Working Group
I get the CAPA next week (Wednesday I'm told) and Ed will be taking 1/2 to Zach (RRRF). I am making progress with Solvay but it's slow there initial opening position was "we don't take on any new customers" interesting sales approach! I'm now sorting a second order but want to know the take-up on the first order before jumping in as it's not that cheap to buy quantity. Until i have all shippingby Ian Adkins - Plastic Extruder Working Group
I thought RepRap was about building a Replicating machine that could also make other items and 3D printing was only been used as it seems the obvious/ only way to go. I got into the project purely for a cheap 3D printer but very soon was taken over by the design challenges involved in self replication, affordabilty and accessibility especially in 3rd world areas. As such I would like to see aby Ian Adkins - Administration, Announcements, Policy
For insulation what about asbestos don't know if it will machine but it is a very well understood material been used since Roman timesby Ian Adkins - Plastic Extruder Working Group
Excellent i do like your calculators keep it up.by Ian Adkins - Reprappers
With the words saying commercial gain I believe you can easily sell on any parts purchased from the RRRF just not for a profit.by Ian Adkins - General
I think the PTFE barrel coming out of the clamp is down to manufacturing tolerance I have tested my extruder dead headed and chew the filament to shreds with no slipage of the insulator, that being said I make the OD 16.5mm which is a gentle push into the clamp. What is the OD of your insulators as plastic stock has a massive manufacturing tolerance often +-0.5mm or more i.e. 16mmby Ian Adkins - Plastic Extruder Working Group
I think in this context commercial means profit making which the RRRF is not. In much the same way that a charity is "commercial" in that it uses money and often sells goods but is a non-profit entity the law certainly treats these things very differently even if only for tax purposes.by Ian Adkins - General
I think this wouldn't as Demented says too..... viscous we use a vibrating table to help remove air with our resin pours and even this is not 100% and still requires a careful pour and our resin is like milk, I know a local injection moulding company and to inject 700g of polymer they use a 250 Tonne lock (pushing force) I'm not sure over what area etc but how ever you look at it 250T on 700g ofby Ian Adkins - Plastic Extruder Working Group
Which complier is it the Microchip offering by any chance? I really like the idea of the cypress solution as it allows for budget drive systems where as a shaft encoder just really ensures you made the step (as it were) and there are plenty of stepper driver chips that do this. The ability to instantly remove all backlash issues is what makes this special. Did you get anywhere with samples of tby Ian Adkins - Mechanics
That sounds like a good way can you give an outline of what you do/need. Until RepRap I successfully avoided the whole forum thingby Ian Adkins - Reprappers