Italy-based Robot Factory, the manufacturer of 3D-ONE 3D printer provided us some tips for getting better 3D printing results. Here is what they wrote:
"It may happen that at the end of printing, the result is as in the following image, the piece has buckled due to a bad adhesion and is presented with several layers detached.
This type of issue arises mainly when the base was not well anchored.
The problem of the detached layers occurs when, after the first layer, the part cools down too fast and the subsequent layers cannot melt the underlying material that has already cooled.
The solutions may be multiple and each can solve one or both defects."
Below there are some considerations:
1. Heated Bed: if you own the Heated Bed, try to increase or decrease the temperature. When I create large pieces, once made the first layers, I turn off the heated surface, but I give back power 10 minutes before removing the piece.
2. Extruded material: try to increase or decrease the temperature of the extruder (beware, if the temperature of the extruder is too high, ABS loses its elasticity).
3. Thickness of slices: sometimes helps to reduce the thickness of slices.
4. Grid: (also called raft), also only 2-3 mm on a small piece certainly helps.
5. Blows of air: alert to the currents of cold air can cool the piece suddenly.
6. Polluted material: whether breaking is in the first few layers, it is possible that hand-pulling the thread to load the extruder has left a greasy film that certainly does not help.
7. Feed rate: too slow or too fast, if it is too slow the part is cooled and does not adhere to the next step, if it is too fast ABS not blends with the lower layer.
8. Software: the problem could be the software, the thickness of the walls and filling can cause excessive stress, or the program does not fill the slice thickness drawn.
Robot Factory has just released the "heated work plan of 3D-ONE" kit. The kit is priced at €300 and includes all the elements for the transformation of the aluminum plane of the support in the heated bed.
- Size of electrical panel: 225 x 190 x 110 mm (Length, Width, Height)
- Weight of electrical panel: 5 Kg
- Power supply: 230v – 200 watt
- Heater: 120 watt – 24v
- Size of heater: 200 x 160 mm (Length, Width)
- Thermoregulation: Adjustable digital thermostat with J thermocouple probe
- Maximum temperature: 120 °C
Most of the problems, for which the result of a 3D printing is not the best, is likely due to three different types:
1. The print material does not stick very well upon the plan and you cannot even begin the process;
2. the material initially holds on well, but after some step of printing, some layers begin to deform, generating an upward curve;
3. the material initially holds on well, but before that the printing ends the piece comes off from the production plan
The first type of problem may be due to an incorrect calibration of the height of the first layer, but in most cases is due to the fact that the production plan is too cold compared to the deposition temperature of the print material, therefore not As soon this is deposited, it triggers a process of thermal shrinkage which does not allow the anchorage of the piece to continue machining.
The second type seems to occur especially when we print relatively small and very angular objects. In this case, the material undergoes a deformation due to the difference of heat between the first layers of the press, which tend to cool down, and the last layers which just emerged from extruder are obviously hot.
As a result of this thermal difference, the cool layers tend to move toward the hottest layers, generating an upward curve especially in the angles and in the parts of small dimensions.
Finally, the third type of problem is in some way related to the previous one, in fact, if one or more sides of the press are raised too much, the strengths that keep the piece anchored to the plan are to decrease up to generate the breaking of the piece itself.
The heated bed definitely help you to solve the above problems, because with it will prevent the deformation of the object being printed. The heated bed greatly improves the adhesion and thus facilitates the creation of any piece.
Posted in 3D Printers
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