Re-wiring Ormerod January 03, 2015 06:26PM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 04, 2015 04:54AM |
Registered: 10 years ago Posts: 314 |
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jsv555
I'm going to re-wire my Ormerod 2 for a couple of reasons:
I'm sick of having random wiring issues from breaks in the wiring to connectors being dodgy.
I've been looking for some suitable wire and am struggling to know what's best to use (electrics are not my strong point). I've got some 4 Core alarm wire kicking around but don't know if it will be up taking the current to the heater etc. Any advice anyone can give me would be appreciated
Re: Re-wiring Ormerod January 04, 2015 07:05AM |
Registered: 9 years ago Posts: 395 |
Re: Re-wiring Ormerod January 04, 2015 08:45AM |
Registered: 9 years ago Posts: 73 |
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Treth
I'm surprised you are having wire breaks, is this in any particular area?
Connector/contacts can be a problem, particularly if crimped without a proper crimp tool or with excessive pressure as this can 'nick' the wire and cause it to break at the end of the crimp with repeated flexing.
Re: Re-wiring Ormerod January 04, 2015 08:51AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 04, 2015 09:04AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 04, 2015 10:01AM |
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jsv555
..( just wondered what impact ambient temp had on prints)...
Re: Re-wiring Ormerod January 04, 2015 11:19AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 05, 2015 07:27AM |
Registered: 10 years ago Posts: 2,472 |
Quote
jsv555
Haven't found a way of easily controlling the output from the compressor yet. Was hoping to wire it to FAN0 and see what the result was. Compressor claims to pull 10A though and I don't think the PSU is up to the job.
Re: Re-wiring Ormerod January 05, 2015 07:41AM |
Registered: 10 years ago Posts: 2,472 |
Quote
jsv555
Hi
I'm going to re-wire my Ormerod 2 for a couple of reasons:
1. I'm sick of having random wiring issues from breaks in the wiring to connectors being dodgy.
2. I'm putting the printer in an insulated / temp controlled enclosure, so I can play around with a few things in a known environment. The PSU, board and extruder drive will be external to the enclosure meaning that the looms are not long enough any more.
I've been looking for some suitable wire and am struggling to know what's best to use (electrics are not my strong point). I've got some 4 Core alarm wire kicking around but don't know if it will be up taking the current to the heater etc. Any advice anyone can give me would be appreciated
Thanks
Jon
Re: Re-wiring Ormerod January 05, 2015 07:55AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 07, 2015 03:13AM |
Registered: 10 years ago Posts: 1,230 |
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jsv555
...I've played around with funnelling air from a large PWM fan but the results were quite frankly terrible with virtually no air flow at all (and yes I did check that the fan was the correct way round!).
Re: Re-wiring Ormerod January 07, 2015 04:36AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 07, 2015 05:37AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 07, 2015 05:29PM |
Registered: 10 years ago Posts: 1,230 |
Quote
jsv555
Just found a cheap multiple outlet, variable flow pump on ebay so I think I will give it a try.Flow rate (540l/h) is not as high as the pump you show but still works out at 0.15l/s which seems pretty good to me.
Re: Re-wiring Ormerod January 08, 2015 01:43AM |
Registered: 9 years ago Posts: 395 |
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jsv555
Quote
Fpex
Yea the thermistor is a pain. They always get out. I blocked it with some pfte tape, but I might revert to the Mendel approach for it
Fpex. I've found that a bit of Kapton tape holds them together pretty well.
Re: Re-wiring Ormerod January 08, 2015 02:24AM |
Registered: 9 years ago Posts: 92 |
Re: Re-wiring Ormerod January 08, 2015 08:11AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 08, 2015 09:46AM |
Registered: 10 years ago Posts: 2,472 |
Quote
jsv555
... BTW, I'm a bit puzzled about the 2 outlets, (both regulated) this was a Q&D test but it seems to me that while regulating one up the other did go down aka the sum of air seems to be the same, not what I expected and nothing was stated about this - will have to take it apart to see what going on inside (stand back, I'm a pro :-))
Re: Re-wiring Ormerod January 08, 2015 05:44PM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 09, 2015 07:25AM |
Registered: 10 years ago Posts: 2,472 |
Re: Re-wiring Ormerod January 09, 2015 07:40AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 09, 2015 08:35AM |
Registered: 10 years ago Posts: 2,472 |
Quote
jsv555
Yep, common sense should have told me that running the temperature of a printer enclosure close to the bed temp was likely to soften everything. I've decided to reprint my door hinges and thermostatically control the enclosure temp to no higher than 40-45 deg C, seeing as the softening point of PLA is about 50 deg C. Going to have problems if I go any warmer than that. I may limit the temp to less. Think the temp probe needs to be placed at the top rather than the bottom (as I was going to do) of the enclosure. Appear to be getting between 6 and 8 deg C temp difference between the floor and roof of the enclosure which is higher than I expected and I don't want to run the risk of melting the extruder which is going to be mounted through the roof.
Experiment did prove that you can use a hair dryer to heat the enclosure space to a reasonable temp in a short period (4-5 minutes). .
Re: Re-wiring Ormerod January 09, 2015 09:17AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 09, 2015 09:53AM |
Registered: 10 years ago Posts: 2,472 |
Quote
jsv555
Yeah, I'm thinking the same. The problem is that I can't print ABS very well at the minute. Anything bigger than a credit card curls like nothing on earth. This was one of the reasons for the enclosure and, as you say,to take the ambient temp variable out of the equation. Think last nights " see how hot I can get it" experiment was mainly driven by beer and I don't think I will ever want to achieve a temp this high in practice.
Re: Re-wiring Ormerod January 09, 2015 02:56PM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 10, 2015 05:42PM |
Registered: 9 years ago Posts: 191 |
Re: Re-wiring Ormerod January 12, 2015 05:39AM |
Registered: 9 years ago Posts: 73 |
Re: Re-wiring Ormerod January 14, 2015 02:56AM |
Registered: 10 years ago Posts: 1,230 |
Quote
jsv555
Turns out achieving bed temp is slightly optimistic. At around 50 deg C everything becomes a lot more pliable than I would have liked.
Re: Re-wiring Ormerod January 14, 2015 03:46AM |
Registered: 10 years ago Posts: 1,230 |
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jamesf
Eric you will find those aquarium pumps are generally very simple in design, so the air regulation is usually awful!..