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Bubble Tech Automotive Product Development
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Honing my craft, 8/10. I was able to get the seam to lay more flat by trimming up the selvage on the backside. Unfortuna...
04/06/2026

Honing my craft, 8/10. I was able to get the seam to lay more flat by trimming up the selvage on the backside. Unfortunately the top of the trim has a sharper radius and makes the seam bulge a little more breaking the uniformity. The leather looks nice and flat without any clumps or uneven patches from the glue, brushing has been working much better than spraying.

The process on this part was a little more involved. The edges have a close relationship with the adjacent parts so the tolerances of the leather have to be accounted for. Using a scrap piece of leather, I test which mating surfaces have enough clearance. The sides that don't, get marked and sanded back. This allows the part to sit flush and ensures the fasteners aren't fighting the bulk of the leather.

The glue up. I mark along the edge where I want the center of the seam to be placed with a sharpie marker then apply contact cement to both parts. Once dry I use the seam and marked line to align the leather. Once set in place, I stretched out the leather and wrapped it around the backside.

This was not the best strategy. Once the seam was completely laid down it limited my access to some areas. I think for the other side I will try a top down approach. This is something that will come with more experience.

Passenger sideUpholstered leatherDouble top stitch in black 135 Tex thread(Ran out of characters in my last post)Take aw...
03/29/2026

Passenger side
Upholstered leather
Double top stitch in black 135 Tex thread

(Ran out of characters in my last post)

Take aways:
I need to improve my skiving skills. The purpose of this is for the seam to lay flat and if you look closely in the picture you can see the backside of the material showing through, I failed to remove enough material. I found this the most difficult step and the most time consuming and causes the most resistance, so I'll just buy a skiving machine...

On the driver's side there's noticeable "blotchiness" which I later found out was due to spraying the contact adhesive, I think it's due to the inconsistency. On the Passenger side I brushed on the adhesive and it looks substantially better.

And sewing. The inexperience shows. My stitches are still crooked albeit getting better. Dialing in the machine is also tricky as I forget. Since I skived more material on the Passenger side kick panel it reduced the thickness of the overall material, which caused my top thread to pull the bottom thread too much resulting in the bottom thread showing through the top.

Also while trimming off the extra seam allowance I applied too much pressure and cut right through the leather, unfortunately.

More lessons learned, but these will suffice for now as "prototypes" to see how they weather and if I want to make any changes when I eventually replace them.

Fail fast. Upholstery is an overlook craft that really changes the feeling and relationship you have with your vehicle. ...
03/29/2026

Fail fast. Upholstery is an overlook craft that really changes the feeling and relationship you have with your vehicle. With last year being the first time in over a decade that I was able to experience my own FD changed my perspective. The aura of the car was and still is everything that made me fall in love with this platform but, the older and more mature me started noticing things that I used to overlook. The feeling and connection I want to feel isn't there. The creeks and cracks all the panels make drive me insane. The lack of luster tactile feel of the budget vinyl is so hard and bland. The interior is very simple and too simple to a fault. I think it lacks depth and detail. This is my attempt to bring this iconic car into modern times.

Start small, fail fast, learn quicker. I am not an upholsterer and this is not a guide, this is my archive of the progression of my car and craft.

-Wrapping the part in masking tape allows you to pull the profile of the part to lay flat and template.
-Adding seams highlighted in the silver pen shows where the fabric will need a seam to wrap around the edge. The tick marks are used as indicators to align the two pieces when they are sewn.
-Tape template is then applied to paper and the seam allowance is added. This ensures you have enough fabric at the seam.
-Cut paper templates used to mark out leather
-Leather cut with extra material to help pull and wrap around certain areas
-Skiving the seam edges (reduces the thickness of the material)
-Temporarily hold the pieces together with staples and check fitment
-Sew the seam.
-Fold over seam allowance and top stitch both sides (forgot picture)
-Glue up part and backside of fabric
-Carefully align the seam, set into place and attach.

A lot to learn, these are far from perfect but will suffice as test pieces and until I gain more experience and redo them when I feel more confident.

Material study: Alcantara is pretty unique in the sense it has virtually no stretch in one direction and very little at ...
03/29/2026

Material study: Alcantara is pretty unique in the sense it has virtually no stretch in one direction and very little at 90*. This means fabric orientation is very crucial to prevent excess/lack of material when wrapping parts. This study was done on the A-Pillars for its simple geometry. The top flare is simple and straight forward but the bottom curve that meets the dash requires strategy. Overall not too difficult, start small and easy and work your way up. Small boost of confidence, on to the next one.

After countless hours of examining high end sports cars I came to the conclusion Alcantara from the door panels up give off the high end luxury feel. IMO it adds warmth and texture to your sightlines, absorbs reflections/glare and *maybe* dampens noise. It •feels• more premium and in this lackluster digital world I'm trying to evoke more feeling and emotion with this redesign.

Before: OEM semi gloss vinyl
After: Black Alcantara

Rear view mirror upgradeFrameless mirrorShaved 1.2mm around the perimeter to allocate for the leather Laser cut acrylic ...
03/14/2026

Rear view mirror upgrade

Frameless mirror
Shaved 1.2mm around the perimeter to allocate for the leather
Laser cut acrylic stamping die
Upholstered in leather
Lever wrapped and sewn with a cross stitch with Tex 90 thread
All edges treated with Fiebings Edge Kote

Wrapping the lever was by far the most difficult due to the size and accessibility on the last 2 holes. Far from perfect as there's already wear on the leather covering the leather but better than my oxidized OEM mirror. This will do for now until I gain more confidence with upholstery to redo this in the future.

Reproduction E-Brake button trim ring Commonly cracked, broken and disintegrated as seen hereReverse engineered, caliper...
03/03/2026

Reproduction E-Brake button trim ring
Commonly cracked, broken and disintegrated as seen here
Reverse engineered, calipers and CAD
3D printed

This is critical for a clean upholstery job. After the handle is wrapped, the end material needs to be folded back and "tucked" in. Then this trim ring is fitted to finish off the joint.

After numerous revisions, I'm finally happy with V7 of the E-Brake boot bracket. I'm still dialing in the template for the E-Brake boot while getting more practice on the sewing machine. Hoping to knock more of these simple projects off to gain some "experience" before I attempt things way out of my league...

Reproduction bracket for the E-Brake boot cover & New coverCommonly cracked and warpedReverse engineered, calipers & rul...
03/01/2026

Reproduction bracket for the E-Brake boot cover & New cover
Commonly cracked and warped
Reverse engineered, calipers & ruler > CAD
3D printed

E-Brake cover templated off OEM boot
Alcantara with Tex 135
Regular stapler

I'm baffled with the boot covers people have been buying and the poor generic templates the companies seem to be using after seeing a few videos on YouTube. With proper templating no zip tie or wire is required to keep it in place.

The stitch length is inconsistent but should be fixed with some tuning of the pressure foot and some more seat time on the sewing machine.

Well that escalated quickly. Chasing electrical gremlins then routing wires for the rear view mirror dash cam. Thanks  f...
08/04/2025

Well that escalated quickly. Chasing electrical gremlins then routing wires for the rear view mirror dash cam. Thanks for the bright lights and A/C. Oh and the best courtesy vehicles for loan 🤣

Tech Tip: Wet vs Dry blastingThis is a sample piece showing the results of sandblasting (dry) vs v***r honing (wet) and ...
08/01/2025

Tech Tip: Wet vs Dry blasting
This is a sample piece showing the results of sandblasting (dry) vs v***r honing (wet) and both combined. The media used was glass bead.

Dry blasting is more aggressive and will clean the part way faster but the dry finish leaves the pours open and is a very uncomfortable desirable finish. This process is typically used for prep work to clean up the parts for paint/powder coating.

Wet blasting aka v***r honing is exactly the same process except it mixes the glass bead with liquid (water) which is more gentle and acts as a "polishing agent" which leaves a much nicer finish. It's less aggressive and a slower process. As you can see in the close up in pic 6 the appearance is a little blotchy. This is due to some of the oxidation not being fully removed due to the more gentle blasting.

This is where I've wanted to explore after trying v***r honing, combining both processes. Dry blasting first to achieve the cleanest part in the least amount of time then v***r honing to "polish" the part. in person there is a noticeable amount more reflection off the surface that has been dry and wet blasted.

I just finished retrofitting my small sandblaster into a v***r honing cabinet and had to test out my theory. Hope this helps someone!

RHD HVAC Restoration kits are now available on our site! A huge thanks to Connor for helping us out and sending us his p...
06/07/2025

RHD HVAC Restoration kits are now available on our site! A huge thanks to Connor for helping us out and sending us his parts for us to test fit and supplying tons of information to help us make these happen!

Our laser cut patterns make restoring your HVAC foam a breeze. Replace the degraded foam that blows debris in your face every time you use your HVAC system. We use quality foam that is UL94 HF-1 Listed (flammability rating) and replaced all the foam with our complete kit.

Orders yours at www.BubbleTech.us

Thanks for following along!
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Officially the first wash ever! After 5? Years of ownership 😅   Now I can finally clay bar the car and either bring some...
06/06/2025

Officially the first wash ever! After 5? Years of ownership 😅
Now I can finally clay bar the car and either bring some life back into it or accidentally take off all the paint.... We'll see how the first attempt at buffing goes...

Thanks for following along!
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