push part on z to accomodate anchor. match anchor width to brim, when set

src/kiri/worker.js

@@ -6,6 +6,7 @@ let BASE = self.base,
     KIRI = self.kiri,
     UTIL = BASE.util,
     time = UTIL.time,
+    qtpi = Math.cos(Math.PI/4),
     current = self.worker = {
         print: null,
         snap: null
@@ -122,6 +123,9 @@ KIRI.worker = {
             let ypos = settings.device.bedDepth / 2 + track.pos.y + miny;
             let rotation = (Math.PI / 180) * 45;
 
+            // move to accomodate anchor
+            ypos += (settings.process.firstLayerBeltLead || 0) * qtpi;
+
             widget.rotate(rotation,0,0,true);
             let minr = gmin(group);
             widget.belt = { xpos, ypos, yadd: minr.maxy - minr.miny };
@@ -147,6 +151,8 @@ KIRI.worker = {
             let { dy, dz } = widget.track.center;
             widget.groupBounds();
             let { xpos, ypos } = widget.belt;
+            // move to accomodate anchor
+            dy -= (settings.process.firstLayerBeltLead || 0) * qtpi;
             widget.rotinfo = { angle: 45, dy, dz, xpos, ypos };
             for (let others of group.slice(1)) {
                 others.rotinfo = widget.rotinfo;

src/mode/fdm/slice.js

@@ -350,6 +350,12 @@
                 while (start.up && start.topShells().length === 0) {
                     start = start.up;
                 }
+                // if a brim applies, add that width to anchor
+                let brim = spro.firstLayerBrim || 0;
+                if (brim) {
+                    minx -= brim;
+                    maxx += brim;
+                }
                 while (offset && start && offset >= sliceHeight) {
                     let addto = start.down;
                     if (!addto) {