3D printers can be used for a number of purposes.
However, even the most basic models are quite expensive for someone who just wants to use them for general work in the house or for crafts, etc.
I wanted a good 3D printer myself but couldn’t find one that could fit my budget, until I stumbled upon this nifty tool that goes by the name Sunlu Smart 3D printing pen.
It’s a mini 3D printer that’s both affordable and easy to use.
Specifications 
- Brand: Sunlu
- Type: 3D Drawing Pen
- Model: SL – 400
- Supporting material: PLA
- Working Power: 10W
- Certificate: CE,EMC,FCC,LVD,RoHs
- Package contents: 1 x Sunlu SL – 400 Smart 3D Printing Pen, 1 x Power Adapter, 2 x Filament, 1 x English Manual
Features 
The following are some of the main features of the Sunlu 3D printing pen:
- It’s one of the simplest 3D printers out there. You can create all kinds of 3D objects with the press of just one key. In fact, it’s so easy to use that even children can create imaginative structures, toys, etc. without any problem.
- The outer shell of the pen is largely transparent. So, you can see all the circuits and moving parts inside and see how it all works during operation. This is a great feature if you are interested in knowing how handheld 3D printers actually work.
- The product is lightweight and thus easy to work with.
- Uses low cost consumables (filaments). Thus, you can design as many objects as you want without worrying about the filament consumption.
- The response time is also quite impressive. You will rarely notice any lags during the printing process.
Design
The design of the Sunlu 3D printer pen is simple and pretty basic, but hey- it works. One thing that’s special about the product is that it doesn’t have much weight and can be easily used with one hand.
As far as functionality goes, it’s pretty easy to understand. You just plug in the power cable, insert the filament from the opening in the back, and wait for it to warm up, which is usually the case with the majority of 3D printers. And that’s it! You can jump right into creating the stuff you want!
Comparison
Sunlu 3D printer pen is not the only 3D printer pen out there, it’s true. However, not all are up to the mark. Some are bulky, others too expensive. And while there could be some affordable and efficient 3D printer pens out there, I have found Sunlu 3D printer pen a good buy.
So why bother testing other pens when you already have one that’s good enough? Plus, it’s the only pen I know that has a transparent shell.
Pricing
Sunlu 3D printer pen is available at most online stores at around $37 which is not too high for a product like this, especially considering that many such pens cost as much as $100 or more.
Where can you buy it?
You can find Sunlu 3D printer pen in almost every online store including Amazon and eBay.
However, gearbest.com is offering it at the lowest price of $37.95.
(Filament purchased extra)
Verdict
Overall, the Sunlu 3D printer pen is indeed worth its price. You can find a number of applications for it, and can even pick it as a gift for your friend as well.
Overall, I loved its built quality and the packaging and will give it 4 stars out of 5.