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koent
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Posted · cannot post anything

Hello,

I've been trying to ask a question on the forums for a while now but every time I finished writing my question and I want to post the topic, I keep getting the message that I'm violating the house rules for some reason.

Sorry if I posted this in the wrong category, don't know where else to put it.

Thanks

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    Posted · cannot post anything

    as it turns out I was able to post this topic. I will include my original question in this reply then and see if a moderator can perhaps make a topic out of it for me in the correct category:

    original topic:

    ______________________________________________

    Hello guys,

    new to the forums, just signed up because there seems to be a lot of knowledge here.

    I am completely new to 3d printers, meaning I have no personal hands on experience with them. All I know about them is a result of the research I performed so far and people I talked with who do have some experience.

    My plan is to build a 3d printer myself, using the popular RAMPS board with a megaduino.

    I am a mechanic with acces to all sorts of machinery (lathe, mill, welder etc.) and industrial type bearings, threaded rods and all other nescassery parts to build the hardware.

    The printer I intend to build will be a carthesian type, a rather large one (600x350x350mm). Since this is my first printer I would like to ask your opinion on a few questions that have arose so far.

    What I don't understand yet is that a cooling fan to cool the part down is usually recommended for improved print quality, but I also see people achieving better results when they put their printer in a heated chamber. Isn't this a little contradictory? (one heating the part up while the other one is cooling it down) Or am I missing something. (probably, lol) Would a combination of the two be any good? The focus here is big parts but surface finish will be important nonetheless.

    Also, since my printing bed will be a pretty heavy unit, I intend to use a counterweight suspended by a cable, rolling over a pulley, or, alternatively, use a pneumatic cylinder and regulate the presure to help it lift the bed. Anyone have any experience with either of these solutions? I might not use them after all since I will first have to measure the required torque to lift the bed, if my motor's torque is sufficient I won't be using neither.

    Thanks in advance for the help

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    Posted · cannot post anything

    this is the original question:

    ______________

    Hello guys,

    new to the forums, just signed up because there seems to be a lot of knowledge here.

    I am completely new to 3d printers, meaning I have no personal hands on experience with them. All I know about them is a result of the research I performed so far and people I talked with who do have some experience.

    My plan is to build a 3d printer myself, using the popular RAMPS board with a megaduino.

    I am a mechanic with acces to all sorts of machinery (lathe, mill, welder etc.) and industrial type bearings, threaded rods and all other nescassery parts to build the hardware.

    The printer I intend to build will be a carthesian type, a rather large one (600x350x350mm). Since this is my first printer I would like to ask your opinion on a few questions that have arose so far.

    What I don't understand yet is that a cooling fan to cool the part down is usually recommended for improved print quality, but I also see people achieving better results when they put their printer in a heated chamber. Isn't this a little contradictory? (one heating the part up while the other one is cooling it down) Or am I missing something. (probably, lol) Would a combination of the two be any good? The focus here is big parts but surface finish will be important nonetheless.

    Also, since my printing bed will be a pretty heavy unit, I intend to use a counterweight suspended by a cable, rolling over a pulley, or, alternatively, use a pneumatic cylinder and regulate the presure to help it lift the bed. Anyone have any experience with either of these solutions? I might not use them after all since I will first have to measure the required torque to lift the bed, if my motor's torque is sufficient I won't be using neither.

    Thanks in advance for the help

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