![]() The mill uses a gear drive system for switching between low and high modes. There is no need for any tools for switching between the high RPM and low RPM modes. You can switch between these two modes using the lever provided on the machine. This high RPM range is intended for soft materials like wood, aluminum, or plastic. Higher RPM gives less torque with high speed. It is intended for working on high-tensile strength materials like steel and strong alloys. These two modes are labeled on the machine as low and high.Ī slower RPM gives more torque with less speed. ![]() Harbor Freight 44991 can work on two different speed ranges of 0-1100 RPM and 0-2500 RPM. The spindle is powered by a 4/5 hp motor and has an R8 taper for holding the cutting tool. Overall, switching tools on Harbor Freight mini mill is very easy due to the use of an R8 spindle taper which does not require special tools. Several videos are available on the internet that you can refer to for a clearer picture of the tool-changing procedure. An ER collet is a good option for tool holding.įor switching between drill chuck and collet, you only have to open one nut on the top of the machine, and the tool required for that is provided with the kit. It comes with the drill chuck, but you have to separately purchase the collets for milling, based on the endmill you use. Harbor Freight uses a 7/64-inch chuck that can hold bits with a maximum shank of ½ inches and has a drilling capacity of 5 inches. Harbor Freight 44991 lets you use a drill chuck for drilling and a collet for holding milling tools. Note that the bench vise is not provided with this machine and you have to purchase it separately. The machine comes with all the mounting mechanisms you will need for this. You also get a lot of upgrade options which makes customization possible.įor holding the workpiece on Harbor Freight 44991, you can use a bench vise. Overall, the build quality of this machine is quite good. ![]() Using this you can mount additional hardware like a 4 th axis or a bench vise. Harbor Freight provides T-slots of size 12 mm (7/16”) on this machine. The mini mill provides an adjustable acrylic guard which can protect you from flying debris and allows you to safely look at what you are working on.Īlternatively, you can also custom-build your guard with a material of your choice. The tools required for this come with the machine. This is also useful if you want to work on an angled surface.įor changing the angle of the head, a nut is provided on the backside. You can use this feature if you want to cut or mill at an angle. A torsion spring is used for supporting the head. It can tilt at an angle ranging between +45 0 to -45 0. The reduced vibration due to the weight increases the precision of the machine as this is a hand-operated machine. This provides good stability while using it on high-tensile strength materials.ĭue to the use of cast iron, the machine weighs around 138 lbs which results in a small but rigid machine. ![]() Harbor Freight X2 mini-mill is primarily constructed with cast iron. ![]()
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