I wanted to share some building experiences adding L-track lashing points to my passenger van. I knew I needed a solid and flexible attachment foundation for my future builds, so this is where I started.
Beginning with lower B-pillar modification of the oem cargo attachment. Note: this probably wouldn't have been possible if I hadn't seen shared photos like the one in this post by @gerstle
Just ripped this partition wall out of my cargo van. Free for pickup in Santa Cruz, CA if anyone's interested. Otherwise, probably taking to the dump. casey.
Based on his first photo I thought the probability that my passenger van would have a couple of extra factory attachments would be pretty likely. I found them under the b-pillar covers and by moving the rounded stickers (which I imagine have something to do with noise reduction).
Ideas for these lower B-pillar L-track points. Flexible enough to attach a lagun table mount. Maybe attach a privacy curtain (I have a ceiling L-track on the works). Etc.
This will be a photographic excursion so brace yourself. Once you have seen this in pictures you'll know exactly what to do.
There is roughly 12mm of space between the outer plastic and the inner metal. For it's strong and insulating properties I chose a 1/2 inch thick by 1 inch wide 2 ft garolite bar.
I then took some think plywood and outlined the shape and length:
I wasn't willing to cut into the larger lower b-pilar panel, but was ok experimenting on the smaller (and I cut a small part from the larger, not visible part - marked with 14mm and angle cut)
Used a Dremel with plastic cut disc (a diamond disk would work well I think too). Slow rpms and little at the time as the plastic will cut/melt.
Making sure my measurements for the holes are accurate. The top one is a M10 and the bottom a M8 screw. (the lower one in the photo is not the final screw I used as it was a button top - I needed recessed):
Content with the fit I transferred by template to an aluminum bar which would be more stable and that I could use to transfer to the garolite:
Transferring the shape and somewhat round holes done by hand drill to the garolite. NOTE! you must pay extra care when drilling/cutting garolite as the dust is very bad for your lungs. I cut under water in a tub with a hacksaw, and also drilled under water in the same tub.
Fitting to make sure my holes were drilled correctly. I did have to file a little (again under water) to adjust my measurements. (it's tricky taking the measurements - and it's ok, this just functions as support for the l-track):
This is what the bar attached under the cover looks like. The lacking depth will be used up by the l-track.
Preparing the l-track and deciding where to drill the holes. Knowing the top M10 screw is going to be impossible to counter-sink in order for the l-track fittings to slide, I make sure to choose an optimal attachment for the bottom screw. Btw. I got a flange l-track with no pre-drilled holes from Cargo Equipment Corp.