4-in-1 Cutting edge sharpness. Angle

[PILOON]

YEP, toothbar makes for a whole new experience.
It turned my CUT into a serious digging machine.
The advantage is more pronounced if your soil is rock infested as a 3-4 inch stone is enough to deflect your bucket.
With my tooth bar I always get a full bucket load.

 

[tricky74]

Yes the tooth bar will be good for digging and I am looking at ordering teeth soon.
The reason I have the bucket open is I push a lot of branches etc and with it closed they go over the bucket.
With it open the branches can be forced down.
I really need a rake or grapple bucket as well.
But just trying to make it as useful as possible without changing too much.

 

[CoyPatton]

I suspect your angle in the bottom of the cutting edge of the back part of your 4’n’1 bucket is to assist in the 2 parts mating when closing. That is just my 2-cents as I can not see that in any of the photos.
If you haul any fine materials in your closed bucket, DO NOT Modify that edge as the chances of a good mate when closed will likely be destroyed, which will likely lead to bucket damage. A new from dealer standard bucket would be cheap compared to repairs or replacement of the 4’n’1 bucket.
Of course a used boneyard bucket or other attachment that you may want would probably be cheaper still.