UPSvolume weight

When trying to determine the UPS dimensional weight of your package, you’d need to follow the steps above and divide by 139 if you measured in inches or divide by 5000 if you measured in centimeters. The equation for measuring in inches would be LxWxH/139 and the equation for measuring in centimeters would be LxWxH/5000.

UPSrates 2024

This means when you are packaging your product, you will want to choose a box that is as close to the size of the order as possible while also leaving just enough space for protective infill.

With Shippo, if your package measures less than 1,728 and you divide that number by 1,728 and the result is a number between 0.1 to 0.5, you’d qualify for cubic pricing. That means you could get up to 89% off the cost of your shipping label!

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UPSfreight

If you ship a small lightweight item in a large box you could be charged more for it whereas if you ship a heavy item in a smaller box you could end up being charged less for it. Dimensional weight can hurt or help you depending on if you measure and calculate correctly.

However, if when you multiply the length, width, and height and the result is less than 1,728, that means your package is under 1 cubic foot which means dimensional weight pricing is not applied. In fact, you may be able to obtain cubic pricing instead.

UPSNext Day Air

For completeness, if you want to get really advanced then you can also get upcut, downcut and compression-cut bits with chip-breaking edges which look serrated and break the chips into very small chunks, which will give you super-fast cuts with little resistance. With these cutters you'll see some lines from the serrations, so they're typically only used for roughing or where surface finish isn't important.

Dimensional weight (also known as dim weight) is a measuring method in which the total size of your parcel is measured against the total weight.

After taking the dimensional weight of your package, they will compare that to the actual weight of the package. Whichever weight is greater is the number they use when calculating shipping costs.

Upcut bits give good chip clearance as they bring the chips up and out of a slotted cut, but they may cause the top cut surface to chip away more than a straight bit or a downcut bit. If you're cutting a composite, laminated or veneered board in a situation where the top surface finish is important (e.g. a kitchen worktop) but the bottom isn't, then a downcut bit can be better, as the downward spiral pushes down on the veneer/coating rather than pulling it upwards and causing the surface to chip away.

When should you use a spiral blade instead of a straight blade? When should you use an up-spiral instead of a down-spiral?

UPS

Calculating the FedEx dimensional weight of your package will be similar to UPS. You’ll need to measure the length, width, and height of your package in inches. Take those numbers and multiply them. Then divide that number by 139.

When using a downcut bit for partial-depth slotting (i.e. not going through the full depth of a board, and routing in the middle of a board rather than edging) you will have to go slowly as the chip clearance for these cutters is not as good as upcut/straight fluted bits - and in fact if you're not careful a downcut bit can compact chips into a slot, causing chip-recutting and potentially excessive heat buildup and even fires.

USPS Pricecalculator

The advantage of spiral router bits is that you do not "hammer" a blade into the grain and pull it out again all the time, tearing and pulling wood out. Instead, the router bit cuts very continually without going "in and out" of the grain, much like a blade that you pull smoothly through the material. You work with very little vibrations and get a very clean cut. Also you can "plunge" nicely.

By choosing proper packaging, you can help limit your shipping costs while also helping the environment by wasting less material and helping to lower fuel emissions by the carriers.

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You’d then use the equation LxWxH/166. The result would then be your dimensional weight and if that number is greater than the actual weight of the product, you’d be charged for that instead.

UPSbox price

Your package could be big but also light or small but also heavy. Since bigger packages take up more space in a vehicle, aircraft, or vessel they limit the total number of packages that can be shipped through that transportation method. To make up for that, carriers will charge more for larger packages.

If you want to get really really advanced then you can get cutters which are combined roughing/finishing cutters where you have one edge which has a "chip-breaker" profile followed closely by a continuous (straight-edged spiral) finishing edge which would more or less take a cutter from a 3-flute spiral to really being a 6-flute spiral. These are also available in compression-cut bits! If you look here you can see some of these bits (scroll to near the bottom and look at the "Tornado" cutter). They're pretty advanced and not cheap, but if you're looking to do CNC routing of melamine-faced or ply boards at blistering speeds, then that's what you'll need. A bit outside the realms of what's used in the home-shop though!

UPSShipping

The main advantage of using straight bits seems to be that they are cheaper, and easier to re-sharpen. They are perfectly fine for a number of uses though, especially where finish isn't particularly important.

If you're edging a board which is laminated on both sides, and you don't want either side to chip, you can actually get what's called a "compression cut" or up-down spiral blade where the lower part of the cutter is an upcut, and the upper part is a downcut, so chips are pushed towards the middle of the cutter. This means that neither the top or bottom of a board will experience major chipping. There's an example of a compression bit here.

Downcut and upcut bits generally give a better cut and are easier to use when working with a handheld/manual-feed router. This is because instead of the cutting edge hitting the timber all at once (as with a straight-fluted cutter), there is only a single small point of contact between the cutter and the workpiece when edge-routing, and a more constant contact when slot-routing. Consequently you get less "chatter" of the router during use. If you're using a CNC router then you can also typically use a faster feed speed when cutting with a spiral bit just because of the superior chip clearance and the lessened chatter. The chip clearance with an upcut bit also means that they're good for plunging into the centre of a workpiece if this is important to you.

USPS dimensional weight is treated slightly differently from the other two major national carriers. You’d start by multiplying the length, width, and height of your package. If the result of that is greater than 1,728 then dimensional weight pricing would be applied.

Lastly, the spiral transports the wood shavings away (the "right" or "upcut" spiral, anyway), further increasing precision, and also reducing friction and burn. Using a "upcut" spiral, you get more shavings in front of your vacuum's muzzle, and less in other places. Using a "left" or "downcut" spiral, you can do a pulling cut, which is said to yield an extremely accurate upper edge (but I haven't tried that one, I prefer the "upcut" spiral's ability to transport away the shavings).