Custom adjustable Phone mount for Volvo C30 V50 C70 + STEP files

A custom designed phone mount that replaces the standard radio face plate fascia to hold medium to large phones.
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updated February 20, 2025

Description

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Welcome Swedish car enthusiasts & tinkerers alike!

Here is my design for a phone mount to fit the P1 platform cars with that waterfall dashboard. 

I have now decided to publish the files here so it can be printed by others but also I've included some STEP files incase someone has a great idea or wanted to adjust to their own needs. 
 

This is a design by DSPrints, made in Shapr3D. 

 

If you do make a new remix or design, please do post it for others to use, don't gatekeep genius designs, Having gone to great lengths to create this and share for free, it's only fair you do the same. 

 

 

What materials, hardware & tools do I need to make this?

3D printer of course! or someone who can print you one!

ASA or ABS filament, I used eSun ASA black. Just needs to withstand a hot car interior to prevent warping, so NOT PLA! 

M4 Flat Square nuts.  x4

M4 x 10mm Button head Allen bolts.  x4

Acetone for gluing together, Acetone is far superior for adhesion with ABS & ASA prints! However, you can use a Super glue (Cyanoacrylate) but I don't recommend it, it can become brittle or poor adhesion. 

 

Let's get into the details!

I'm not going to go into step by step of each variant, edit, print or thoughts as this was about 6 months in the making, I just kept CAD-ing and I honestly can't remember everything now, this was a challenge for me of learning CAD, trial & error AND learning to print ABS/ASA filament.

So i'm going to summarise here of how it was designed, please do read though! 

Why I wanted to design this

As a proud owner of a C30 I found the waterfall dashboard wouldn't hold a phone cleanly, I never liked vent mounted phone holders either and everywhere else on the dashboard was not phone friendly. 

So I needed a solution. 

 

There are some designs out there that do fit the criteria of a custom dashboard mounted phone mount and while they are very good in their own way,

 I wanted one that filled some criteria's:

  1. It must be easy to print! - Being the odd shape the fascia is & the current designs out there, it was a very tricky print, most of them required to be printed vertically with lots of supports,  I wanted it to be made easier for myself & others to print. 
  2. The design should be adjustable to suit other phones.  - The designs I found (and made myself previously) where static designs, they couldn't be “infinitely” adjusted for phones, so I wanted to have this ability. This saves time creating multiple versions of multiple sizes. 
  3. It should be easy to remove - Being a 3D print, it will of course not be as strong as an OEM part, so I didn't want to fascia to be really tightly clipped into place. 
  4. I wanted to design it myself - Why? Well, I wanted to challenge and additionally I wanted to be able to sell prints for other enthusiasts such as yourself! 

 

So here's the outcome!

 

 

Neat right? 

Okay, so it doesnt look fancy fancy. It's more function over form. However if you wanted to add some style, You could sand & paint it, make it super glossy, print in difference colours, entirely up to you & your creative DIY skills! 

 

About the design

 

The phone mount

So the phone mount was simple really, after already designing a holder on my previous design (can be found on my profile) I simply split it in half, made it look better & printable. 

Also, I knew that I would want it bolted onto the fascia, so it uses M4 Bolts & M4 Flat square nuts, the nuts are incased into the mount via adhesion.

So here is a CAD images

 

The back plate is connected via acetone adhesion (or super glue) 

 
The fascia

The fascia wasn't too hard to draw up, by taking measurements from the original one it was easy to daw up with correct dimensions, I did give some tolerance for printing error to fit in the dashboard but it was a case of measuring the outer dimensions, the hole for the screen & adding the details at the bottom. 

 

The clips, I wish I could say the same! Absolute nightmare!!

So, to go back to my criteria of being easy to print, having clips be part of the fascia would make the print harder, you'd need a lot of supports or print vertically which being ABS plastic is not always going to be easy, you could of printed it face down but for 2 reasons this is a no no.

1. you'd see the first layer lines which you wouldn't know if they looked good until the print finished & I wanted to use the ironing feature in the slice for the front.

2. the orientation of printing downwards would mean the layers of the print would go the wrong way for the clips making them weak.

So I made them separate so the fascia could be printed completely flat on the build plate on it's back & the clips could be printed in a stronger origination. 

 

This wasn't the hard part though,  The hard part was making them the correct angle, in the correct location & the correct length to clip into the slots in the dashboard. 

It was just trial & error, honestly, I'm not sure how I achieved it! Other than printing about 20 variants, mm by mm changes until one snapped into place! YES Success! 

A few more variants later & it was snapping into place but also, removable without breaking a clip. 

There are location indents highlighted orange in this photo. Allowing the gluing process to be easy & accurate. Making multiple prints easy to repeat over & over.  

Here are the CAD images of the clips & lower guide tabs. 

The clips & lower guide tabs will be glued into place once printed, more on printing below. 

So I've filled the following criteria's,

  • Easier to print
  • Adjustable 
  • Fits & removes easily.
  • My own CAD design

This is a great success! I'm happy with the outcome, I am of course summarising it all & it was a lot of work to get to this stage alone!

It took multiple spools of filament, many hours CAD-ing & many trips to the car testing my design. 

 

Thats great, Now I want one!

Good I'm glad! So lets get into that then so you too can have a phone mount for your water fall dashboard. 

Having made it as easy as possible to print, it requires ABS or ASA filament to be suitable in a car and they can be tricky to print. I did have a Carbon Fibre PETG one and that did look awesome but it did eventually warp.  

 

I have made a video on how to build it all up which is here 

 
ONE IMPORTANT NOTE ABOUT THE CLIPS!!

Note the image below how the clip points upwards, this is the correct orientation!

I have included a STL of it complete so you can see how it should look built. 

 

 

"What phones will it fit?"  

Common question and understandable…but can't be answered by myself so I can only give you dimensions.

Since your phone will be laying down in a landscape orientation in this bracket the biggest contributing factors are, How thick is your phone & how tall is your phone? (including phone case) 

 

The smallest width this mount will goto is 135mm so if your phone is smaller then this then it may fall out. is there phone this small?

The widest width this mount will goto is 172mm so if your phone is taller than this then it won't fit at all. 

 

Thickness, I've allowed a generous 14mm depth, this seemed to be the goto size from my research of other custom made 3D printed mounted phone holders. Plenty thick enough for the average phone, camera bump & case.

I do believe most phones at about 168mm tall, any taller and I think we are venturing onto a tablet device. 

 

I printed on a Creality K1 but here's my settings I used. 

 

Everything is at 0.2 layer height. 

 

Everything printed in ABS or ASA (standard for in car 3D printed things as they are exposed to the elements & heat, so using PLA is not going to work.) 

 

Faceplate - Supports YES (for where the clips & tabs go underneath)  See below slicer pictures.

 3 Walls, 25% infill, rectilinear, 5 top layers so you have a smooth surface to iron & Ironed top layer if possible but not essential, just makes it look nice!

 

Clips - Supports NO, 3 walls, 100% infill, I printed these SLOW to get good layer adhesion as these need to be strong. 

Lower tabs - Supports YES, 3 walls, 100% infill,  I printed these SLOW to get good layer adhesion.   See slicer pictures on this post. 

 

Phone bracket - Supports NO, 3 walls, 25% infill adaptive cubic. 

Backing plate - Supports NO, 3 Walls, 100% infill

 

Honestly, if your a weathered printer and know your settings and what works for you,  go with that, it just needs to be strong enough & of course NOT PLA!

The files below are all you need. 

There's a complete DEMO file of how it should look with the clips, DO NOT PRINT THIS it's just a complete STL for demonstration. 

 

Also included STEP files for people to tinker with, making it completely open source. You may have better ideas, you may want to adjust it for your phone, you may just want to learn from my mistakes. 

I will not be editing this any further as it's taken so much of my time and money, I feel its best for the community to have its fun.

 

Good luck and

Your welcome. 

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