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von Primoz
Do 2. Mär 2017, 20:31
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Update: bed repair and PEI sheet

I finally decided to fix my ceramic bed. At first I used UHU epoxy kit to fill the hole, but it was very hard to get exact amount of epoxy into it, because it was very shallow hole and it was hard to get epoxy kit that thin. After it dried I saw that I didn't completely fill the hole and that finish...
von Primoz
Do 5. Jan 2017, 18:37
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

I have this epoxy glue at home: https://www.yuki-model.de/Klebstofftechnik/Epoxidharze/30-Minuten-Epoxy-200g-Epoxidharz-100g-Epoxidhaerter-100g.htm?shop=cn&SessionId=&a=article&ProdNr=650011&t=51&c=53&p=53 And I might also have some this epoxy putty somewhere: http://www.biso...
von Primoz
Mi 4. Jan 2017, 20:13
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

Today PETG took a bite out of ceramic bed. https://lh3.googleusercontent.com/rC5CfkotOTytQVDUhc6k8rXUOb-kNwpUBExuU9u41CaPz7H7sRLX4JSDBjjvAZ90CwXtPs_w8cEWg_U0hTAOIfrjkRhBIcen69V17wRqoMStCs2L361W8DJCFJLEWOypQHDwo4fPyGJyfl4gU6FRVe92ZgLtspRcscvU4I4o-Pjakxv4zZ9Am2JTiWdq1Qh8mJ6pv2rk0uJPRfE_iboqYqqcaLz3s2y...
von Primoz
Fr 23. Dez 2016, 16:42
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

I am not sure what they mean with the word liner. As I understand it is a protective sheet, that you are supposed to peel off, when you want to glue something with it. Having liner only on one side only makes sense, when you have a tape on a roll . But if you have a sheet, you can not have an expose...
von Primoz
Fr 23. Dez 2016, 15:30
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

@PeterKa PEI (Ultem) sheet is supposed to be the best thing for printing ABS. It is rather expensive (for me, with shipping more than 40€). But you must be careful, because you can ruin it, if you print for example PETG, which sticks too much. I don't really understand how you print on 3M468 MP shee...
von Primoz
So 11. Dez 2016, 23:40
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

I also had a hot extruder stepper motor (and also y and x motor). I mounted a fan on extruder motor (you can see it on pictures on previous page), but because it is 12V fan and is running from the same 7,5V power supply as my cold end fan, it barely spins and it doesn't blow much. After that I lower...
von Primoz
Sa 10. Dez 2016, 16:26
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

I wasn't sure if you are a developer or it is just a category. (The rest of us only have stars and you have a banner). I don't think it is fair to compare Conrad with cars manufacturers. Firstly cars manufactures have a 100 years of heritage, mixed with national pride and all that social-economics s...
von Primoz
Sa 10. Dez 2016, 12:40
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

Thanks for the explanation. I didn't even think before about this seal to prevent the upward flow. And while we are on topic on hotends, and If I understand correctly you are developer at Conrad: I was looking at hotends of new RF100 and RF500. They are both different. RF100 one looks a lot like so ...
von Primoz
Fr 9. Dez 2016, 00:02
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

Interesting design. I was always designing for two fans. Mainly because I was designing surround nozzle and I was already splitting airflow in half for that. One thing I noticed is that axial fans loose a lot of power when you are using ducts and nozzles. The one I am using for part cooling is 45x45...
von Primoz
Do 8. Dez 2016, 21:05
Forum: Erweiterungen
Thema: My RF1000 modifications (English)
Antworten: 32
Zugriffe: 11012

Re: My RF1000 modifications (English)

According to this: http://reprap.org/wiki/Hot_End_Design_Theory You need short length where plastic is molten (temperature above melting point), so it can be extruded and the rest of the plastic must be solid, so it can transmit force from drive gear (temperature below glass transition temperature)....

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