How to Use David Laser Scanner 3.9.1 to Create 3D Models
David Laser Scanner is a software that allows you to create 3D models of objects and surfaces using a webcam and a laser pointer. It is a low-cost and easy-to-use system that can achieve high accuracy and resolution with reasonable hardware. In this article, we will show you how to use David Laser Scanner 3.9.1 to scan and export your own 3D models.
What You Need
A computer with Windows XP/Vista/7/8/10/11 and David Laser Scanner 3.9.1 installed. You can download the software from here[^1^] or here[^2^]. The software is not free, but you can try it for 30 days before buying it.
A webcam with a resolution of at least 640x480 pixels and a frame rate of at least 15 fps. You can use any standard USB webcam or an industrial camera with a FireWire or GigE interface.
A laser pointer with a wavelength of around 650 nm (red) and a power of less than 5 mW. You can use any cheap laser pointer or a line laser module that projects a straight line instead of a dot.
A calibration pattern that consists of two planes at right angles with a checkerboard pattern on each plane. You can print your own calibration pattern from the software or buy a ready-made one from here.
An object or surface that you want to scan. It should have some texture and contrast, and it should not be too shiny, transparent, or dark.
How to Scan
Set up your webcam and laser pointer on stable stands or tripods. Make sure they are aligned horizontally and vertically, and that the laser beam is perpendicular to the camera axis.
Place your calibration pattern on a flat surface and adjust its position and orientation so that it fills most of the camera view. Make sure there is no shadow or reflection on the pattern.
Start David Laser Scanner and click on the Calibration button. Follow the instructions on the screen to calibrate your camera and laser. You will need to sweep the laser line over the calibration pattern several times until the software detects it and shows you a green overlay.
Once the calibration is done, click on Next and then on Scan. Place your object or surface in front of the calibration pattern and adjust its position and orientation so that it fills most of the camera view. Make sure there is no shadow or reflection on the object or surface.
Sweep the laser line over the object or surface slowly and steadily from left to right or from top to bottom. The software will capture the shape of the object or surface as a point cloud and show you a preview on the screen.
If you want to scan more than one side of the object or surface, you can rotate it or move it to another position and repeat the scanning process. The software will automatically align and merge the scans into one 3D model.
When you are done scanning, click on Finish and then on Export Mesh. You can choose to export your 3D model as an STL, OBJ, PLY, or VRML file. You can also edit your 3D model using the tools in the software or in other programs.
Tips and Tricks
You can improve the quality of your scans by using a higher resolution camera, a brighter laser, a larger calibration pattern, a better lighting condition, and a smoother scanning motion.
You can reduce the noise and artifacts in your scans by using the filters and smoothing tools in the software or in other programs.
You can add color and texture to your scans by using the Texture option in the software or by applying images or materials in other programs.
You can create more
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U4GM - 4 Ways to Use Resupply Stratagem Wisely in Helldivers 2
In Helldivers 2, chaos is part of the mission, and managing your resources effectively can mean the difference between a successful evac and a team wipe. Among all Stratagems, the Resupply Stratagem is deceptively simple but incredibly powerful when used wisely. Below are four strategic ways to maximize its impact during missions.
1. Time It Between Engagements, Not During
It might sound obvious, but dropping a Resupply Stratagem during active combat is a mistake many players make—especially when panic sets in. The pods take a few seconds to land, and standing still to grab gear during a firefight is a great way to end up in orbit with a one-way ticket.
Instead, coordinate resupplies between major encounters or just after you've cleared a zone. This gives your squad breathing room and ensures everyone can safely restock without attracting attention.
2. Don't Spam – Stack Efficiently
Each Resupply pod holds four uses, and all players can access any of the pods. This makes coordination essential. If everyone calls in a resupply at once, you’ll likely waste resources and clutter the battlefield.
Get into the habit of designating one person—usually whoever notices the low ammo situation first—to drop a resupply for the team. Over time, your squad will develop a rhythm, conserving Stratagem slots for other essentials like turrets or shield generators.
3. Use Resupply Pods as Bait or Cover
In higher difficulties, enemies tend to swarm hard and fast. But here’s a little-known trick: Resupply pods have weight and impact. Dropping one on an enemy group not only stuns or kills them—it also creates temporary terrain you can use for cover or blocking chokepoints.
Smart teams will even use Resupply pods to disrupt patrols or delay advancing enemies during extractions. It’s a risky tactic, but in desperate moments, it might just save your life.
4. Optimize Resupply With Budget in Mind
If you're looking to buy Helldivers 2 Super Credits or get Helldivers 2 Super Credits cheap, it's worth considering how efficiently you use your Stratagems in relation to your unlocks. Wasting uses means more grind, especially if you're working through Warbonds and want to get the most out of every mission.
Sites like U4GM offer ways for players to speed up their progression, but even if you're playing organically, stretching your supplies lets you complete more difficult missions, earn more rewards, and ultimately reduce how much you need to spend.
Mastering the Resupply Stratagem isn’t about calling it in as soon as you’re low—it’s about anticipating the squad’s needs, understanding the mission’s pacing, and using your tools creatively. Whether you’re grinding for gear or just trying to stay alive, efficient resupply usage is a cornerstone of successful Helldiving.
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A Guide to Completing the Tools of the Trade Quest in Skull and Bones
In the vast and treacherous waters of Skull and Bones, every pirate knows the importance of quality tools. From crafting to harvesting Skull and Bones Items, having the right equipment can make all the difference between success and failure. When you finally dock at Sainte-Anne, you’re faced with the task of building a new ship to bolster your reputation in the pirate community. To achieve this, you’ll need the assistance of Zayn, the Shipwright, and a set of essential tools. Here’s your comprehensive guide on completing the Tools of the Trade quest in Skull and Bones.
Meeting Zayn: Setting the Stage
Upon your arrival at Sainte-Anne, your first port of call should be Zayn, the Shipwright. He’s the key to unlocking your journey towards building a formidable vessel. Zayn will emphasize the importance of quality materials to forge top-notch tools, benefiting both your reputation and his own. Fortunately, if you’ve been diligent in your scavenging endeavors, you might already possess the necessary materials to kick-start this mission.
Locating the Carpenter: Where Craftsmanship Begins
To initiate the Tools of the Trade quest, you’ll need to locate the carpenter. Positioned conveniently near the Shipwright, just before the connecting bridge, the carpenter awaits to assist you in crafting essential tools vital for your maritime exploits.
Crafting the Pickaxe: Forging Your Path
The pickaxe is a crucial tool for harvesting metal ore from deposits, essential for crafting endeavors. Crafting this tool requires a combination of materials that might already be in your possession:
2 Torn Sails
1 Broken Plank
With these materials secured, invest 20 silver to craft the pickaxe and unlock a vital aspect of your pirate toolkit.
Crafting the Saw: Timber for the Taking
Next on your crafting agenda is the saw, indispensable for harvesting wood from trees. This resource is pivotal for crafting and maintaining your vessel. To craft the saw, gather the following materials:
1 Metal Salvage
2 Torn Sails
Invest 20 silver to fashion the saw and ensure a steady supply of timber for your endeavors.
Crafting the Sickle: Reaping the Rewards
Completing your arsenal of tools is the sickle, utilized for harvesting fiber from plants. This versatile resource finds applications across various crafting endeavors. Gather the following materials to craft the sickle:
1 Scavenged Wood
1 Rusty Nail
Invest 20 silver to craft the sickle and expand your harvesting capabilities.
Obtaining Materials: Scavenger’s Delight
While most materials required for crafting can be obtained through previous missions, should you find yourself lacking, various avenues are available to buy skull and bones boosting. You can either purchase the materials or venture out into the open waters, looting crates found adrift. Adaptability and resourcefulness are key traits of a successful pirate.
Harvesting Acacia: Navigating the Perils
With your tools crafted, the next task is to harvest Acacia for the Shipwright. Acacia serves as a vital component in the construction of your new ship. However, acquiring it isn’t without its challenges. Sail northeast from Sainte-Anne, navigating through narrow passages between islands. Beware of lurking dangers, including crocodiles infesting these waters. Timing is crucial as you wield your saw to extract 8 pieces of Acacia, essential for your ship’s construction.
Completing the Quest: Rewards Await
Deliver the harvested Acacia to the Shipwright to fulfill your part of the bargain. In return, expect a gratifying reward, including silver and various other resources. With the transaction complete, Zayn will commence crafting your new ship, marking a significant milestone in your pirate odyssey.
In Skull and Bones, mastering the art of crafting and harvesting is paramount to your success as a pirate captain. By completing the Tools of the Trade quest, you not only bolster your reputation but also equip yourself with essential skills and resources for the challenges that lie ahead. So, set sail, hone your craftsmanship, and let the winds of fortune guide you to glory on the high seas.