IT’S BEEN EASY to overlook some of the innovations coming out of the RepRap community as of late.Between regular MakerBot releases and announcements for new types of printers like the B9 Creator and Form 1, as well as a steady stream of big company announcements, the system that helped launch the home 3-D printer market has been a bit overshadowed. A couple new machines deserve attention though, offering unique features that the more mainstream devices don’t have.

One of those printers is the $699 Portabee ($480 unassembled), based on the RepRap Wallace, which brings low cost and portability to the 3-D printing market.Overall, the specs are what you would expect in a low-cost machine. A 120x120x120 mm (4.75 inches) build volume makes it competitive with other printers in its price class, but is still less than half the volume of the new MakerBot Replicator 2. The heated build platform helps prevent model warping during print jobs, but the bare-bones case design also increases the chance of accidental burns and damage during transport. The Portabee uses 3 mm filament and a 0.5 mm extruder nozzle — both good specs, but moving toward obsolescence with higher-resolution 1.75 mm filament and 0.4 mm nozzles becoming more widespread.

While the Portabee might not lead the market in most categories, it is definitely among the most portable. Daniel Warner, one of the project creators, says, “Just a simple thing like taking it to your friends place to demonstrate an actual 3-D print is really convenient. During the engineering phase we did have the option of producing another big, lumbering 3-D printer, but we grew more attached to the concept of portability and minimalism as we progressed.” Their goal was achieved — not only does the machine weigh in at a paltry 6.2 pounds, it also folds down flat.

Another option for the budget- and space-constrained comes from PrintrBot. The $399 PrintrBot Jr is a kit-based system that has been stripped down to the bare minimum — it only prints PLA plastics and has a plywood build platform, but is an accessible option for children.The $1,499 PrintrBot Go has more impressive base specs — 200x185x150 mm build area (339 cubic inches compared to 410 cubic inches for the MakerBot Replicator 2). The base unit is limited to 3 mm PLA filament, but can print ABS with an upgrade to a Printrbot heated bed. What really sets this printer apart is its integrated “spy-worthy” attaché case.

Both solutions lack the polish of the FoldaRap, but stand apart from that machine by being available in kit or fully assembled form, not just a list of parts to be purchased.
If you’re looking for a lightweight way to get started with 3-D printing but don’t want to drop $2,000 on a Makerbot, these might be just what you need.

成本不到500美元的便携式和经济实惠型全新3D打印机

它被容易忽视的一些创新走出的RepRap社区为晚的。定期发布MakerBot以及对新类型，如B9造物主和Form 1，以及大公司公告源源不断，这帮助发起了主场3-D打印机市场已经有点盖过了系统打印机的公告。一对夫妇的新机值得关注，虽然，提供了更多的主流设备不具备的独特功能。

其中一个打印机是699美元Portabee（480美元未组装）的基础上，华莱士的RepRap，带来低成本和便携性的3-D打印市场。总体而言，该规范是你希望在低成本的机器是什么。一个120x120x120毫米（4.75英寸）构建的体积使得它在其价格类中的其他打印机具有竞争力，但仍只有不到一半的新MakerBot Replicator的2的体积加热构建平台有助于防止在打印作业模式翘曲，但裸-bones外壳设计也增加了运输过程中意外烧伤和损坏的几率。所述Portabee使用3毫米长丝和0.5mm的挤出机喷嘴 - 既有良好的规格，但移向过时与更高分辨率1.75毫米长丝和0.4毫米喷嘴变得越来越普遍。

虽然Portabee可能不会导致市场在大多数类别，它绝对是其中最便于携带。丹尼尔·华纳，该项目创建者之一，他表示，“就像把它给你的朋友的地方，展示实际的3-D打印一个简单的事情真的很方便。在工程设计阶段，我们确实有制作另一个大，笨重的3-D打印机的选择，但我们越想越连接到便携性和极简主义的概念，因为我们的进展“他们的目标已经实现 - 不仅在机器重量在一个微不足道的6.2磅，它也向下折叠平。

对于预算 - 和空间受限的另一个选择来自PrintrBot。 399元PrintrBot Jr一家已经剥离下来，以最低限度的试剂盒为基础的系统 - 它仅打印PLA塑料并具有胶合板构造平台，但是可访问的选项为儿童。该1499美元PrintrBot Go有更令人印象深刻的基础功能 - 200x185x150毫米建设面积（相比于410立方英寸的MakerBot Replicator的2339立方英寸）。基座单元被限制到3毫米PLA长丝，但可与升级到Printrbot加热床打印的ABS。但真正该打印机与众不同的是其集成的“间谍值得”公文包。

这两种解决方案缺乏FoldaRap的打磨，但站在除了那台机器由是药盒或完全组装的形式，部分不只是一个列表，购买使用。如果你正在寻找一个轻量级的方式开始使用3-D打印，但不想放弃$ 2,000一个Makerbot，这些可能正是你需要的。