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Post by freqamp on Aug 16, 2021 1:31:16 GMT
Thanks graywolf! I'm sure it will, do lots of prep! I also baked everything except the block.
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Post by graywolfr1 on Aug 16, 2021 6:59:03 GMT
Lol tell me about the prep, when I was prepping the side casings(I wanted them polished and they were in a very sad state (that bad it looked like crazy paving with the amount of scratches on it) I practically sanded my fingers to the bone. Still some work to do on the clutch casing before I can polish them.
Ive now invested in a sand blasting cabinet and did the cam cover as a test and that has come out really well, will see if I can upload some photos later of the before and after as my camera is in the shed.
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Post by freqamp on Aug 16, 2021 14:32:05 GMT
Haha. I understand that feeling, my fingerprints come and go from all the sandpaper. Sand blaster is the way to go. I also got a cabinet, although have only ever filled it with baking soda for the soft parts like the carbs. I never did get around to figuring out what to use on the engine. What media are you using in yours?
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Post by kickstart on Aug 18, 2021 20:17:31 GMT
Welcome aboard and very impressive work , more pics the merrier 👍
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Post by graywolfr1 on Aug 19, 2021 9:02:10 GMT
Haha. I understand that feeling, my fingerprints come and go from all the sandpaper. Sand blaster is the way to go. I also got a cabinet, although have only ever filled it with baking soda for the soft parts like the carbs. I never did get around to figuring out what to use on the engine. What media are you using in yours? |
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Post by graywolfr1 on Aug 19, 2021 9:04:30 GMT
I'm using aluminium oxide 120 grade as didn't want anything too harsh, getting fairly good results so far, but I'm a newbie at sandblasting so still learning.
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Post by graywolfr1 on Aug 19, 2021 10:10:50 GMT
Forgot to say just make sure you wear a mask when sandblasting as I still get a lot of dust coming out of cabinet and its not good for your lungs.
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Post by freqamp on Aug 19, 2021 10:54:19 GMT
Thanks I'll look into the aluminium oxide.
Using soda, there's a lot of dust everywhere! Hair, skin, bike, tools! I learned to cover everything up. May get an old vacuum for the next run of blasting I do. I've got an 86 K75 to do after this, and that engine is in shocking condition (externally at least).
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willy3pigs
Full Member
Posts: 368
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Post by willy3pigs on Aug 19, 2021 12:18:44 GMT
This is the set up I use, cheap Chinese dust cyclone on top of a 2.5 ltr paint tub, and a bottom of the range workshop vac. It gives negative pressure in the cabinet, so no dust escapes, with the added bonus of you can see what you're doing as there's no clouds of dust swirling everywhere. The whole set up including 25KG of ultra fine crushed glass came to less than £140 and works very well, leaving a dull satin finish on aluminium parts which then shine up very easily and quickly with a Brillo pad. For about every 1000 grams of dust collected in the bucket via the cyclone I get less than1 gram in the vac dust bag. www.ebay.co.uk/itm/Dust-Separator-Collector-Connect-Household-Cyclone-Vacuums-Cleaners-Filter-UK-/193677141245?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268The blast media supplier advised only fine or ultra fine crushed glass for the low powered DIY cabinets. I'm interested in trying soda in my cabinet, can anyone recommend a brand, grade, and cheap source I could try..  |
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Post by graywolfr1 on Aug 19, 2021 12:32:58 GMT
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Post by graywolfr1 on Aug 19, 2021 12:36:28 GMT
I use a 50ltr compressor 14cfm with a Clarke bench cabinet does the job
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Post by graywolfr1 on Aug 19, 2021 12:45:58 GMT
This is the set up I use, cheap Chinese dust cyclone on top of a 2.5 ltr paint tub, and a bottom of the range workshop vac. It gives negative pressure in the cabinet, so no dust escapes, with the added bonus of you can see what you're doing as there's no clouds of dust swirling everywhere. The whole set up including 25KG of ultra fine crushed glass came to less than £140 and works very well, leaving a dull satin finish on aluminium parts which then shine up very easily and quickly with a Brillo pad. For about every 1000 grams of dust collected in the bucket via the cyclone I get less than1 gram in the vac dust bag. www.ebay.co.uk/itm/Dust-Separator-Collector-Connect-Household-Cyclone-Vacuums-Cleaners-Filter-UK-/193677141245?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268The blast media supplier advised only fine or ultra fine crushed glass for the low powered DIY cabinets. I'm interested in trying soda in my cabinet, can anyone recommend a brand, grade, and cheap source I could try.. |
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Post by graywolfr1 on Aug 19, 2021 12:50:07 GMT
Machine mart does soda, depends what you call cheap,when I last looked they were around £22 for 7.5kg or £54 for 22kg, someone might know somewhere cheaper if so I would be interested as well to try out soda.
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Post by freqamp on Aug 19, 2021 13:06:52 GMT
I like that separator setup willy, great idea to save the vacuum filters.
Crushed glass sounds good. I just read some horror stories about aluminium oxide getting in the engine, although why you wouldn't thoroughly mask off inside of the engine parts I don't know! Any media is going to cause issues if you leave it laying about in parts. Soda is nice since it washes off with water, but it doesn't have strong stripping power. Some say the crystals break up once they hit the part, so its single use. But I haven't seen the science on that. I've used my batch of soda quite a bit and its still effective. Good to clean up corrosion on aluminium or surface rust from chrome / steel, won't get paint off.
I got it from a from a little corner grocery store. $2 a kilo cause I made a deal with the owner to buy 20 kg.
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Post by freqamp on Aug 19, 2021 13:08:51 GMT
Does the separator have a filter in it? Could you just use any old sealed bucket and attach some hoses?
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