Old Collingwood Posted June 18, 2023 Share #1 Posted June 18, 2023 Hi all, does anyone know the exact make up of Micro Set please? reason I ask is - I read its diluted White Vinegar? Long story short I need to do a minor microwave oven interior repair to a bit of seam rusting, and I read you can treat rust with White Vinegar, then paint over the top of it with microwave safe enamel paints. OC. mtaylor, Egilman and Canute 3 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
Egilman Posted June 18, 2023 Share #2 Posted June 18, 2023 No one knows for sure cause microscale refuses to release the formula and the people who do the MSDS on such things refuses to make them... Which means it is not a hazard to anyone's health, or is a toxic chemical... Micro set... the overall internet opinion on it is Acetic Acid.. A completely natural product you can buy it by the gallon without restriction... So no I do not believe that Micro set is diluted white vinegar, it is acetic acid.... They are two different things although coming from the same source... The sniff test is what most everyone uses and it smells like vinegar... For doing what you want to do? go to your local concrete supply house or big box store and buy a quart of acetic acid, then you will have the proper grade for doing such work as etch cleaning rusty metals... mtaylor, Canute, Jack12477 and 1 other 4 Quote Current Build: F-86F-30 Sabre by Egilman - Kinetic - 1/32nd scale In the Garage: East Bound & Down, Building a Smokey & the Bandit Kenworth Rig in 1/25th scale Completed: M8A1 HST 1930 Packard Boattail Speedster M1A1 75mm Pack Howitzer F-4J Phantom II Bell H-13's P-51B/C Temporary Suspension: USS Gwin DD-433 F-104C Starfighter "Blue Jay Four" 1/32nd Scale Terminated Build: F-104C Starfighter ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Quote: "Relish Today, Ketchup Tomorrow" Link to comment Share on other sites More sharing options...
realworkingsailor Posted June 18, 2023 Share #3 Posted June 18, 2023 I think the concentration of acetic acid in Micro Set is too dilute to be of any significant use other than for decals. Most household vinegar is about 5% acetic acid by volume, Micro Set might be somewhere around 2 or 3 percent (I’m no chemist, just my own personal guesstimate). Andy mtaylor, Old Collingwood, Jack12477 and 2 others 5 Quote Quando Omni Flunkus, Moritati Current Build: USF Confederacy Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 18, 2023 Author Share #4 Posted June 18, 2023 4 hours ago, Egilman said: No one knows for sure cause microscale refuses to release the formula and the people who do the MSDS on such things refuses to make them... Which means it is not a hazard to anyone's health, or is a toxic chemical... Micro set... the overall internet opinion on it is Acetic Acid.. A completely natural product you can buy it by the gallon without restriction... So no I do not believe that Micro set is diluted white vinegar, it is acetic acid.... They are two different things although coming from the same source... The sniff test is what most everyone uses and it smells like vinegar... For doing what you want to do? go to your local concrete supply house or big box store and buy a quart of acetic acid, then you will have the proper grade for doing such work as etch cleaning rusty metals... Thank you kindly brother, its such a tiny area inside at the back along the seam. OC. mtaylor, Egilman and Canute 3 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 18, 2023 Author Share #5 Posted June 18, 2023 3 hours ago, realworkingsailor said: I think the concentration of acetic acid in Micro Set is too dilute to be of any significant use other than for decals. Most household vinegar is about 5% acetic acid by volume, Micro Set might be somewhere around 2 or 3 percent (I’m no chemist, just my own personal guesstimate). Andy Thank you kindly Andy. OC. Egilman, mtaylor, Canute and 1 other 4 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
Altduck Posted June 18, 2023 Share #6 Posted June 18, 2023 9 hours ago, realworkingsailor said: I think the concentration of acetic acid in Micro Set is too dilute to be of any significant use other than for decals. Most household vinegar is about 5% acetic acid by volume, Micro Set might be somewhere around 2 or 3 percent (I’m no chemist, just my own personal guesstimate). Andy I don't know anything about this application, but if what you want is higher concentrations of acetic acid, try an old time photography supplier. In the wet lab darkroom days, "Stop Bath" was approx. 2% acetic acid, but the stores stocked 28% acetic acid, and also "Glacial" acetic acid, which was straight anhydrous acetic acid. You can then dilute it to desired strength for your application. mtaylor, Egilman and Canute 3 Quote Richard Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 19, 2023 Author Share #7 Posted June 19, 2023 2 hours ago, Altduck said: I don't know anything about this application, but if what you want is higher concentrations of acetic acid, try an old time photography supplier. In the wet lab darkroom days, "Stop Bath" was approx. 2% acetic acid, but the stores stocked 28% acetic acid, and also "Glacial" acetic acid, which was straight anhydrous acetic acid. You can then dilute it to desired strength for your application. Thank you kindly Richard. OC. Canute, Egilman and mtaylor 3 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 19, 2023 Author Share #8 Posted June 19, 2023 This is the area I need to treat and hopefully touch up with a small tin of microwave safe enamel paint. I assume its safe to use at the moment not from a radiation leak perspective as I dont think it is leaking, but the actual food should still be ok being cooked in covered containers (like cling film pricked covers) shouldn't it? The rusting is only small in and the rest of the inside is perfect. OC. mtaylor, Jack12477, Egilman and 1 other 4 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
Egilman Posted June 19, 2023 Share #9 Posted June 19, 2023 4 hours ago, Altduck said: but the stores stocked 28% acetic acid, and also "Glacial" acetic acid, which was straight anhydrous acetic acid. You can then dilute it to desired strength for your application. Yep, Glacial is used to etch concrete in prep for painting or staining... you do have to figure out a formula to match the application, stripping/cleaning rust is a high concentration job... Jack12477, mtaylor and Canute 3 Quote Current Build: F-86F-30 Sabre by Egilman - Kinetic - 1/32nd scale In the Garage: East Bound & Down, Building a Smokey & the Bandit Kenworth Rig in 1/25th scale Completed: M8A1 HST 1930 Packard Boattail Speedster M1A1 75mm Pack Howitzer F-4J Phantom II Bell H-13's P-51B/C Temporary Suspension: USS Gwin DD-433 F-104C Starfighter "Blue Jay Four" 1/32nd Scale Terminated Build: F-104C Starfighter ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Quote: "Relish Today, Ketchup Tomorrow" Link to comment Share on other sites More sharing options...
mtaylor Posted June 19, 2023 Share #10 Posted June 19, 2023 Hmm.... why not just use some fine grit sandpaper and sand it down to bare metal then paint? From the photos I can't tell if any of the rust has gone through the metal completely. Egilman and Canute 2 Quote Mark "The shipwright is slow, but the wood is patient." - me Current Build: Past Builds: La Belle Poule 1765 - French Frigate from ANCRE plans - ON HOLD Triton Cross-Section NRG Hallf Hull Planking Kit HMS Sphinx 1775 - Vanguard Models - 1:64 Non-Ship Model: On hold, maybe forever: CH-53 Sikorsky - 1:48 - Revell - Completed Licorne - 1755 from Hahn Plans (Scratch) Version 2.0 (Abandoned) Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 19, 2023 Author Share #11 Posted June 19, 2023 19 minutes ago, mtaylor said: Hmm.... why not just use some fine grit sandpaper and sand it down to bare metal then paint? From the photos I can't tell if any of the rust has gone through the metal completely. I don't think it has as it still feels solid. The Urgency to fix it is its our only cooking device as our electric cooker stopped working and we have not been able to replace it - so we are fully reliant on the microwave. OC. Canute, Egilman, Jack12477 and 1 other 4 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 19, 2023 Author Share #12 Posted June 19, 2023 Do you guys think it is safe to use till I can get the stuff to treat the rust and paint over those areas if the food is covered inside the micro. OC. mtaylor, Egilman and Canute 3 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
mtaylor Posted June 19, 2023 Share #13 Posted June 19, 2023 I would think so, OC. I do a lot of microwaving being single and lazy and I cover everything as part of the lazy is not wanting to clean up the splatter. Egilman, Jack12477 and Canute 3 Quote Mark "The shipwright is slow, but the wood is patient." - me Current Build: Past Builds: La Belle Poule 1765 - French Frigate from ANCRE plans - ON HOLD Triton Cross-Section NRG Hallf Hull Planking Kit HMS Sphinx 1775 - Vanguard Models - 1:64 Non-Ship Model: On hold, maybe forever: CH-53 Sikorsky - 1:48 - Revell - Completed Licorne - 1755 from Hahn Plans (Scratch) Version 2.0 (Abandoned) Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 19, 2023 Author Share #14 Posted June 19, 2023 4 minutes ago, mtaylor said: I would think so, OC. I do a lot of microwaving being single and lazy and I cover everything as part of the lazy is not wanting to clean up the splatter. Thank you Mark, was just looking for some reassurance so I can also tell the admiral as she has been a bit worried also. OC. Canute, mtaylor, Egilman and 1 other 4 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
Old Collingwood Posted June 27, 2023 Author Share #15 Posted June 27, 2023 Bit of progress on this folks - I got hold of a tin of microwave safe enamel paint from a microwave repair shop, its supposed to be the exact same type of paint they spray the inside of microwaves. I turmed it off found a good place to work on it, then i made sure both areas to be painted where clean and any loose fragments cleaned away, then using a small brush I started to put some paint layers down, drying them in between with a hairdryer, I put about Five layers down untill all rust dents and marks where covered. I then turned the microwave over and did the same to the other damaged area. It was put in place and with the door left open - was left over night before testing it. Hopefully its saved our microwave and our health, as I am sure radiowaves bouncing off rust areas can not be safe with microwaved food. OC. mtaylor, Jack12477, Egilman and 3 others 6 Quote Current builds 28mm Battle of Waterloo attack on La Haye Saint Diorama. 1/700 HMS Hood Flyhawk with PE, Resin and Wood Decking. Completed works. Dragon 1/700 HMS Edinburgh type 42 batch 3 Destroyer plastic. HMS Warspite Academy 1/350 plastic kit and wem parts. HMS Trafalgar Airfix 1/350 submarine plastic. Black Pearl 1/72 Revell with pirate crew. Revell 1/48 Mosquito B IV Eduard 1/48 Spitfire IX ICM 1/48 Seafire Mk.III Special Conversion 1/48 Kinetic Sea Harrier FRS1 Link to comment Share on other sites More sharing options...
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