We Are Learning 3D Printing Through Our Personal Experience…
TinyBoy is an open 3D printer designed as an entry-level machine for students and newbies to learn 3D modelling technology and, ultimately, to encourage creative thinking. It is a small, easy to build and most of all an affordable machine to get you started in the world of 3D printing without having to spend too much on it. This device is originally intended for people to built it themselves from parts with an expected bill of material of just around $200 USD, but you can also order an already assembled 3D printer as well. HobbyKing, one of the largest online stores for radio controlled models and parts is selling Mini Fabrikator 3D printer which is essentially the TinyBoy 3D printer already assembled and ready to be used. You can order the Mini Fabrikator from USA for $215.93 USD from their USA warehouse plus shipping or if you are in Europe you can get the Mini Fabrikator from EU for 204.63 Euro from their European warehouse plus shipping. The 3D printer is also available in their international warehouse for $179.77 USD in Asia, but ordering from there would mean that you will have to pay customs taxes when it arrives.
The Mini Fabrikator 3D printer offers a print size of 80x80x80mm (the size of the build plate) and uses 1.75mm PLA filament by default (there is no heated build plate available) and the extruder nozzle is 0.4mm. The only thing that is kind of missing is a filament holder probably due to the small size of the 3D printer, but then once you get the printer you can actually 3D print a holder yourself. The community has already made some upgrades and additional things that you can 3D print or do to make the experience using the device even better and you will keep learning to use the device along the way. The Mini Fabrikator 3D printer does indeed look like a great first step into the world of 3D printing without too much of an investment and we have ordered one of these to check it out, so you can expect more about the device when we get our unit and personally try it out..
Time for yet another upgrade for our faithful MakerBot Replicator 2 3D printer, this time we are going to be upgrading the plastic filament drive mechanism of the extruder with a better all metal version from Fabberworld. The filament drive upgrade comes as a full kit containing all precisely CNC machined parts from aluminum that will replace the plastic parts, along with stainless steel screws, replacement bearing, spring and even a pulley gear for the motor. The kit is designed for Replicator 2 3D printers that have a total thickness of the plastic parts of 20mm as there are models of the printer with slimmer 15mm parts, but we have figured out an easy way to install it even on these. We are going to get back to that in a moment however. There is also a version of the upgrade available for MakerBot Replicator 2X 3D printer where you essentially get two kits – a left and right one for each of the motors of the dual extruder 3D printer.
Probably some of you will ask why we would want to upgrade the standard plastic parts with aluminum ones, the answer is simple – plastic wears off easily, it breaks and it does not handle that well a lot of heat. The standard plastic parts are from injection molded ABS plastic that is pretty durable and resistant to high temperature, but over time it can start to wear off from abrasive filaments and to deform or even break from the constant high temperatures around it. Back on the metal upgrade kit, it not only replaces the plastic parts, but also comes with some improvements that help you get more consistent and problem free prints and these actually do seem to work well. On the top “lever” where the filament goes in there is a wider opening to allow the PTFE tube to slide in and make the filament slide in easily when you load it into the extruder, though if you are not using the Teflon filament guide tube this can actually make it a bit harder to load filament. The included MK7 pulley that replaces the standard one has a smaller gap where the filament goes through that is more suitable for the 1.75mm filament that the MakerBot Replicator 2 uses. The standard pulley that our printer came up with seems to be more suitable for 3mm filaments than the 1.75mm one that we are actually using, so after the upgrade you should also get more contact surface and force pulling the filament through the nozzle and thus in theory less problems with filament jams.
Now, how to install the filament drive upgrade for the extruder of MakerBot Replicator 2 3D printers that come with 15mm thickness of the plastic parts. We have figured out a way to do everything as easy as with 20mm models, all you would need are two 5mm spacers to bring the motor back the needed extra space. The only thing that you would need to remove is the fan grill in front of the cooling fan of the extruder and then the two screws holding everything in place will be long enough to accommodate the 5mm spacers (you can use two 2.5mm ones or a different combination if you do not have a single 5mm ones). The cooling fan blades are small and if you do everything with a bit of extra caution around the extruder while the printer is operating you should not have trouble even with the fan grill missing. Alternatively you can look for screws with extra 5mm length and keep the full build with the fan grill, but finding only two 5mm spacers should be easier and you can probably build them with existing smaller spacers that you may have lying around.
For the price that the MakerBot Replicator 2 3D printer sells one would expect to get a 3D printer that is well built and very durable with no problems while printing, but our experience has shown that after you get the device you still need to do some upgrading and tuning as you go. One of the good upgrades that you might want to do in order to have less problems on the long term with issues working with the 3D printer is the filament drive upgrade of the extruder, though it is not the only one. Do note however that some of the upgrades, including this one are not as easy to be performed by people that are new to 3D printing and are not familiar with their 3D printers as it requires to disassemble the extruder and then assemble it again with the new parts installed.
When talking about an accessible 3D printers using SLA printing technology the name Formlabs often comes first in mind and the company has just introduced their new model – the Form 2. The new model comes with a 40% larger build volume, touch-screen controls, and Wi-Fi and Ethernet LAN connectivity allowing for even better desktop stereolithography 3D printing. The new model comes with new integrated resin system that automatically dispenses resin allowing for bigger prints, less mess, and longer tank life. A new peel mechanism and heated resin tank create a reliable print process for large, solid parts and intricate details. The new model comes with 50% more powerful laser in the form of a 250mW precision laser guided by custom-built galvanometers, delivering bigger prints with better detail.
The new model also comes with new resin cartridges that have RFID tags in order for the printer to track the exact level of resin left and properly use the auto refilling system. There however will be a special Open Mode that will allow you to print using 3rd party resins, but for these you will have to manually refill the tank with resin. The price of the new Formlabs Form 2 3D printer starts at €3299 Euro excluding VAT for Europe or $4199 USD for USA. The prices of the resins and additional accessories for the new Form 2 SLA 3D printer start at the same levels as the ones for the previous Form 1 and Form 1+ models.
Formlabs Form 2 Technical Specifications:
– Printer Dimensions: 35 × 33 × 52 cm / 13.5 × 13 × 20.5 in
– Printer Weight: 13 kg / 28.5 lbs
– Operating Temperature: Auto-heats to 35° C / Auto-heats to 95° F
– Power Requirements: 65 W, 100–240 V, 1.5 A 50/60 Hz
– Laser Specifications: 405nm violet laser, 250mW laser
– Connectivity: Wifi, Ethernet and USB
– Printer control: Interactive Touch-screen with Push-button
– Technology: Stereolithography (SLA)
– Peel Mechanism: Sliding Peel Process with wiper
– Resin Fill System: Automated
– Build Volume: 145 × 145 × 175 mm / 5.7 × 5.7 × 6.9 in
– Layer Thickness: 25, 50, 100, 200 microns / 0.001, 0.002, 0.004, 0.008 inches
– Laser Spot Size: 140 microns / 0.0055 inches
– Supports: Auto-Generated, Easily Removable
– Resin cartridges: 1L cartridges