Re: Moire - Might not always be in the printer
Velocity is the rate of change of position.
Acceleration is the rate of change of velocity.
Jerk is the rate of change of acceleration.
- techbuilder2175
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Re: Moire - Might not always be in the printer
Hi 2n2r5,
Did you ever think of adding rickq front bed stabilization?
http://www.soliforum.com/topic/3407/fro … ed-wobble/
Powder coated steel enclosure, 1/4" Surface grounded hardened aluminum plate, MK2A Heat bed, .200 Polished fused quartz plate, Machined quick change hot bed mount, E3D hot end, Ramps 1.4, DRV8825 stepper motor drivers
- 2n2r5
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Re: Moire - Might not always be in the printer
techbuilder2175 wrote:
Hi 2n2r5,
Did you ever think of adding rickq front bed stabilization?
Yep, sure have. I have to acquire some parts. I think I may just use bearings on a spring loaded arm. I am a little concerned about how much pressure I will be putting on the sides. My bed has a bunch of play when you lift the front of the bed. I don't want introduce any backlash in the bed due to excess pressure keeping the front of the bed from falling.
Or,
I ignore the problem and build my new machine.
SD3 w/ mods:
Glass bed with QU-BD heat pad upgrade, threadless ballscrew w/ 8mm smooth rod, spectra line belt replacement, lawsy MK5 extruder, Lawsy replacement carriage, E3D hotend, Ramps 1.4 w/ reprap discount controller, DRV8825 drivers, 12v 30A PS, Acrylic case, Overkill Y-idlers, Filament alarm, Extruder fan + more.
Glass bed with QU-BD heat pad upgrade, threadless ballscrew w/ 8mm smooth rod, spectra line belt replacement, lawsy MK5 extruder, Lawsy replacement carriage, E3D hotend, Ramps 1.4 w/ reprap discount controller, DRV8825 drivers, 12v 30A PS, Acrylic case, Overkill Y-idlers, Filament alarm, Extruder fan + more.
- techbuilder2175
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Re: Moire - Might not always be in the printer
2n2r5 wrote:
techbuilder2175 wrote:Hi 2n2r5,
Did you ever think of adding rickq front bed stabilization?
Yep, sure have. I have to acquire some parts. I think I may just use bearings on a spring loaded arm. I am a little concerned about how much pressure I will be putting on the sides. My bed has a bunch of play when you lift the front of the bed. I don't want introduce any backlash in the bed due to excess pressure keeping the front of the bed from falling.
Or,
I ignore the problem and build my new machine.
Your so close though!
I would make this the last thing you do to your solidoodle
just so you can have closure lol
Powder coated steel enclosure, 1/4" Surface grounded hardened aluminum plate, MK2A Heat bed, .200 Polished fused quartz plate, Machined quick change hot bed mount, E3D hot end, Ramps 1.4, DRV8825 stepper motor drivers
- techbuilder2175
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Re: Moire - Might not always be in the printer
Have you tried this mod 2n2r5?
http://reprap.harleystudio.co.za/?p=321
Powder coated steel enclosure, 1/4" Surface grounded hardened aluminum plate, MK2A Heat bed, .200 Polished fused quartz plate, Machined quick change hot bed mount, E3D hot end, Ramps 1.4, DRV8825 stepper motor drivers
- 2n2r5
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Re: Moire - Might not always be in the printer
I don't know which version he did that on. I have the MD20B. That might be the MD20A which needed a hack to get to work correctly. Adrian ended up with those. I think it needs a 4.7K pull up resistor in-line some where to work. I do have a couple spare DRV8825 md20b drivers that are questionable. I will test this out and see how it does.
SD3 w/ mods:
Glass bed with QU-BD heat pad upgrade, threadless ballscrew w/ 8mm smooth rod, spectra line belt replacement, lawsy MK5 extruder, Lawsy replacement carriage, E3D hotend, Ramps 1.4 w/ reprap discount controller, DRV8825 drivers, 12v 30A PS, Acrylic case, Overkill Y-idlers, Filament alarm, Extruder fan + more.
Glass bed with QU-BD heat pad upgrade, threadless ballscrew w/ 8mm smooth rod, spectra line belt replacement, lawsy MK5 extruder, Lawsy replacement carriage, E3D hotend, Ramps 1.4 w/ reprap discount controller, DRV8825 drivers, 12v 30A PS, Acrylic case, Overkill Y-idlers, Filament alarm, Extruder fan + more.
32 2013-10-24 00:08:30 (edited by 3d-oodler 2013-10-24 00:09:04)
Re: Moire - Might not always be in the printer
2n2r5 wrote:
I don't know which version he did that on.
If you look at the pic closely at the photo on http://reprap.harleystudio.co.za/?p=321, it shows the '01C' connection, which makes it a MD20B.
MD20A:
MD20B:
Re: Moire - Might not always be in the printer
I think everyone will find that running 1/32 microstepping on ALL axi (particularly with a fine-pitch z-rod) means you slam into Marlins 10KHz planner limit... 40000pps which often has 4 steps a planner loop, which means its a 10khz limit .... looong before 'decay' becomes an issue...