Made some good progress with the Bison II this weekend, enough to justify an update at any rate!
The weathering process is always one that tends to go a bit slower, mostly because the stages require a good amount of time to complete and layer properly. First up was the application of an overall wash of 90/10 thinner/MM Raw Umber. This provides some "grime" to work with in the next step of the weathering process.
Once that was on, the next step was the application of some dot filters to fade the paint work and add a "dusty" look to the finish since this is a desert theater vehicle. I chose MM enamel Light Gray, Armor Sand, and Raw Sienna for the dots. Working in small sections at a time, small dots are applied and then blended together with a square tipped blender brush lightly dampened with clean thinner until the desired result is achieved. I wear a paint breather mask throughout this process due to the thinner fumes involved.
This shot of the glacis gives you a kind of before/after look...the area on the right has already been filtered while the area on the left has the dots applied but not yet blended together.
After a few hours of patient work, the result is achieved.
In order to bring out some of the detail and provide some depth to the finish, the next step involves applying a pin wash of 90/10 thinner/MM Burnt Umber with a 10/0 pointed brush.
The wash will "bloom" a bit in places, so after hitting all the areas, I came back with the same 10/0 brush and clean thinner and removed/adjusted the excess wash where needed.
Will let that sit overnight and take a look at it again with fresh eyes to see if any more adjustments are needed before sealing it up in preparation for the pigment treatment.