D3D v20.04.27 Calculations - Revision history

Marcin: /* Bed Lift Capacity - Weight and Counterweight */

2020-05-09T03:25:25Z

Bed Lift Capacity - Weight and Counterweight

← Older revision		Revision as of 03:25, 9 May 2020
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	*The print bed is limited to 37 lb prints - so it does not display the full capacity of what can fit on the bed.		*The print bed is limited to 37 lb prints - so it does not display the full capacity of what can fit on the bed.
	*Interestingly - making the bed heavier - and the counterweight heavier - produces a ready solution. This can go up to the limit of friction loss and holding capacity of the [[GT2 Belts]].		*Interestingly - making the bed heavier - and the counterweight heavier - produces a ready solution. This can go up to the limit of friction loss and holding capacity of the [[GT2 Belts]].

			=Counterweight=
			*1"x10"x4" counterweight is 10.3 lb from [https://www.onlinemetals.com/en/weight-calculator]

Marcin: /* Bed Lift Capacity - Weight and Counterweight */

2020-05-07T19:37:46Z

Bed Lift Capacity - Weight and Counterweight

← Older revision		Revision as of 19:37, 7 May 2020
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	*Counterweight should be 24 lb.		*Counterweight should be 24 lb.
	*The print bed is limited to 37 lb prints - so it does not display the full capacity of what can fit on the bed.		*The print bed is limited to 37 lb prints - so it does not display the full capacity of what can fit on the bed.
	*Interestingly - making the bed heavier - and the counterweight heavier - produces a ready solution. This can go up to the limit of friction loss and holding capacity of the GT2 ~~belts~~.		*Interestingly - making the bed heavier - and the counterweight heavier - produces a ready solution. This can go up to the limit of friction loss and holding capacity of the [[GT2 Belts]].

Marcin: /* Bed Lift Capacity */

2020-05-07T19:37:27Z

Bed Lift Capacity

← Older revision		Revision as of 19:37, 7 May 2020
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	*Thus, geardown is calculated to not be needed, as we run into filament stripping limit.		*Thus, geardown is calculated to not be needed, as we run into filament stripping limit.

	=Bed Lift Capacity=		=Bed Lift Capacity - Weight and Counterweight=
	*18x18x17" (D3D v20.04.27) of plastic weighs 90 kg!		*18x18x17" (D3D v20.04.27) of plastic weighs 90 kg!
	*For practical purposes, only half of that would be a useful print assuming you have some geometry at 100% infill beyond a simple cube. 45 kg. But - if you are printing 2x4s or many verticals at 100%, you can indeed get close to 100% of the 90kg. Thus, leave 90 kg as the max. That would be a 10 day print with [[Supervolcano]].		*For practical purposes, only half of that would be a useful print assuming you have some geometry at 100% infill beyond a simple cube. 45 kg. But - if you are printing 2x4s or many verticals at 100%, you can indeed get close to 100% of the 90kg. Thus, leave 90 kg as the max. That would be a 10 day print with [[Supervolcano]].
	*That is 200 lb.		*That is 200 lb.
			*13 lb is current lift capacity. A counterweight would do well, so that together with bed, we have 24 + 13 lb = 37 lb total lift.
			*Counterweight should be 24 lb.
			*The print bed is limited to 37 lb prints - so it does not display the full capacity of what can fit on the bed.
			*Interestingly - making the bed heavier - and the counterweight heavier - produces a ready solution. This can go up to the limit of friction loss and holding capacity of the GT2 belts.

Marcin at 18:52, 7 May 2020

2020-05-07T18:52:27Z

← Older revision		Revision as of 18:52, 7 May 2020
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	*Say teeth grab at 1 cubic mm of volume. 1/25^2 = 8 lb of 5000 psi filament. Thus, max push before stripping is about 10 lb. We have 2x that in the drive motor already.		*Say teeth grab at 1 cubic mm of volume. 1/25^2 = 8 lb of 5000 psi filament. Thus, max push before stripping is about 10 lb. We have 2x that in the drive motor already.
	*Thus, geardown is calculated to not be needed, as we run into filament stripping limit.		*Thus, geardown is calculated to not be needed, as we run into filament stripping limit.

			=Bed Lift Capacity=
			*18x18x17" (D3D v20.04.27) of plastic weighs 90 kg!
			*For practical purposes, only half of that would be a useful print assuming you have some geometry at 100% infill beyond a simple cube. 45 kg. But - if you are printing 2x4s or many verticals at 100%, you can indeed get close to 100% of the 90kg. Thus, leave 90 kg as the max. That would be a 10 day print with [[Supervolcano]].
			*That is 200 lb.

Marcin at 15:52, 5 May 2020

2020-05-05T15:52:32Z

← Older revision		Revision as of 15:52, 5 May 2020
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	*5 mm drive radius on drive means - about 20 lb drive		*5 mm drive radius on drive means - about 20 lb drive
	*Measurements: about 10 lb before filament slips; motor does not skip before slipping, so tensioner is the limiting factor		*Measurements: about 10 lb before filament slips; motor does not skip before slipping, so tensioner is the limiting factor
			*Note push is very easy with full melt (from standing extruder upon startup). This implies, that under the limit of good heating, it is kinking of filament in 'mystery zone' that requires much of the push force.
			*Say teeth grab at 1 cubic mm of volume. 1/25^2 = 8 lb of 5000 psi filament. Thus, max push before stripping is about 10 lb. We have 2x that in the drive motor already.
			*Thus, geardown is calculated to not be needed, as we run into filament stripping limit.

Marcin: Created page with "=Extruder Driver Calculations= 5 mm drive radius on drive means - about 20 lb drive Measurements: about 10 lb before filament slips; motor does not skip before slipping, so..."

2020-05-05T15:48:11Z

Created page with "=Extruder Driver Calculations= *5 mm drive radius on drive means - about 20 lb drive *Measurements: about 10 lb before filament slips; motor does not skip before slipping, so..."

New page

=Extruder Driver Calculations=
*5 mm drive radius on drive means - about 20 lb drive
*Measurements: about 10 lb before filament slips; motor does not skip before slipping, so tensioner is the limiting factor

D3D v20.04.27 Calculations - Revision history

Marcin: /* Bed Lift Capacity - Weight and Counterweight */

Marcin: /* Bed Lift Capacity - Weight and Counterweight */

Marcin: /* Bed Lift Capacity */

Marcin at 18:52, 7 May 2020

Marcin at 15:52, 5 May 2020

Marcin: Created page with "=Extruder Driver Calculations= *5 mm drive radius on drive means - about 20 lb drive *Measurements: about 10 lb before filament slips; motor does not skip before slipping, so..."

Marcin: Created page with "=Extruder Driver Calculations= 5 mm drive radius on drive means - about 20 lb drive Measurements: about 10 lb before filament slips; motor does not skip before slipping, so..."