Scott Bonnar 45 Teardown (9 - Paint Stripping and Rust Removal)

Love Larn is sponsored by Scott Bonnar Fabrication and Parts. They make an array of well-engineered, high-quality Scott Bonnar parts. Check them out!
  / sbfabandparts  
_________________________

If you enjoy the video please hit 'Like' 👍 and subscribe for more (tap the bell 🔔 to be notified when new videos are released):    / @lovelarn  

Support the channel on Patreon
►   / lovelarn  

Follow us Facebook for all the latest news and content
►   / lovelarnau  

Follow us on Instagram
►   / lovelarn  
_________________________

In this final video of the teardown series, we start with sandblasting and stripping the existing paintwork (00:00:23). Sandblasting is a nice option if you prefer to avoid a chemical stripper but some factory finishes (e.g. powder coat) may prove stubborn.

Chemical strippers are nasty to use but can be effective. If nothing else, make sure you protect your eyes and your skin… the stripper used in this video burns if it contacts skin!

Clean up the stripper residue or sandblasting dust using a degreaser.

Rust can be removed using any number of different techniques including sandblasting, hand sanding (by hand or using wire wheel), conversion, and hydrolysis. An effective yet simple, low-cost/low-toxicity approach involves soaking overnight in a vinegar bath (00:08:25). Use 18 grams of table salt dissolved in 1 litre household vinegar (or 1 cup salt to 4 litres/1 gallon of vinegar).

Scrape off any loose rust beforehand and again when the item comes out of the bath. Immediately neutralise with bicarbonate of soda and rinse in water before drying. Do not soak alloys using this technique or they'll disappear into the soaking bath never to be seen again.

I find it best to treat any new flash rust with a rust converter like Ranex. I rag on the Ranex and let it soak in (00:12:56).

Finish up with a final degrease and don't forget to get a primer of some sort on your clean metal work as soon as possible before it starts to corrode again.

If you're planning to have your metalwork professionally repainted (powder coated or sprayed), enquire about sandblasting as an option. Sandblasting yourself, unless you're equipped for it, still costs money to hire the booth and consumes your time; it can also be a messy job. Stripper costs a few bucks too. You may find the cost to have your mower sandblasted to be about the same as other options and it's certainly easier to have someone do the job for you.

☠️ Some of the chemical products used in this video
● Paint Stripper: Poly Polystrippa
● Rust Converter: Bondall Ranex Rustbuster
● Degreaser: Diggers Wax & Grease Remover

► Watch all the teardown videos here:    • Scott Bonnar 45 Teardown  

► Check out the SB 45 walkthrough videos if you're new to cylinder mowers and Scott Bonnars:    • Scott Bonnar 45 Walkthrough  

⚠️ Your safety is your responsibility. Don't forget to disconnect your spark plug before starting work on your machine and always read and follow the instructions/labels on your equipment, tools and chemicals. ⚠️

#ScottBonnar #Teardown #PaintStripping
_________________________

Additional Resources:
► Scott Bonnar Restorations FB Group:   / 1801521490103765  
► Scott Bonnar - Buy, Sell, Swap Australia FB marketplace   / 1207116562722291  
► Scott Bonnar Addicts FB Group:   / 791569104336316  
_________________________

About me and this channel: I'm Michael, a homeowner and aspiring lawn addict. I make these videos to share as much as I can, as best I can, from my recent experience rebuilding two Scott Bonnar 45 mowers. Although I'm a passionate wood worker and ex-IT guy, I have zero mechanical experience. I'm no expert on these subjects but I learn by sharing and it encourages me to grow a better lawn and build a better mower if I know you're watching!

© 2019 Michael Hanes. All rights reserved.