USPS shipping module / tare weight
This tare weight is driving me nuts.
zen cart version 1.3.8a
Goal: Set up USPS shipping module using tare weight so multiple orders in the same session do not compound packaging materials weight
IE: I want to set it up so that the tare weight is added only one time into a total multiple purchase weight.
My average packing supply weight is about 7oz or .4375
When I add a product to the catalog I enter its actual weight, not the packaged weight.
I have my product weight entered as pounds and ounces in the decimal point system.
Book 1 weighs 10 oz = .625
Book 2 weighs 6 oz = .375
Book 3 weighs 1lb 6oz = 1.375
total weight 2lbs 6oz = 2.375
I test the shopping cart for product weight calculation per item.
I add a book to the shopping cart. Above the item it shows how many items and the how much it weighs.
The weight shows correctly. I add the other two books to the cart, one at a time to see if the weight is calculated correctly for each addition. The weight is correct for each addition.
In shipping/packaging > the "Small to Medium - added percentage:weight", I'm thinking to set a percentage figure with weight set at 0 is the way to accomplish what I want. I have tried adjusting the percentage weight until the cart shipping estimator total lines up with USPS website calculations.
This worked until I added in a third book and then the tare weight goes higher than expected. So I back the tare percentage down until it again lines up with USPS website calc.
The problem is when I add just one book to the cart I get offered first class mailing when I know once packaged it will be too heavy for 1st class.
I hope this explanation makes sense. Anyway with the weight figures I've given and my goals what should I be doing with the tare to get things correct?
Has anyone else had success with this?
Last edited by buildingblocks; 13 Oct 2008 at 07:29 PM.
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