STUFF YOU ARE GOING TO NEED TO CLEAR A PLAYFIELD.
--------------------------
1-718.jpg
You are gong to need a pile of stuff to clear a playfield. Even if you are not going to clear anything today, you might as well start getting all your supplies in order.
The first chemical you are going to need is Naphtha. It is usually sold as VM&P Naphtha (Varnish Maker & Painter's Naphtha). It has little odor, but is a carcinogen, so you need to wear your chem mask while using it. Naphtha evaporates very fast and won't dissolve our playfield touch-up work. We clean everything with Naphtha before we clear.
-
The next chemical you need is Lacquer Thinner. This is nasty stuff that dissolves many finishes. We use it to clean our spray guns, eye droppers, measuring cups, spills. DON'T use Lacquer Thinner to clean your playfield. Lacquer Thinner is a mega carcinogen, so again, chem mask needed during use.
-
Next you need the Clearcoat itself and the hardener. Unlike Poly, the 2PAC will not just air dry. The hardener acts as a catalyst and chemically turns the clearcoat hard as a rock. You must be very careful to never even get a drop of the hardener into the can of clearcoat - if you do, in about a month the entire can will turn into a solid cube of plastic. So again, do not dip an eyedropper into one can and then use it in the other!
The clear is mixed with the hardener in a 2 ratio, so a half cup of clear to a quarter cup of hardener. Or 10 drops of clear to 5 drops of hardener if you are mixing small batches to level inserts.
Don't mix the clear in any old plastic or foam cup, because the clear will become contaminated as it melts the plastic. Use a glass measuring cup and do it right. The store you buy the clear at will have disposable plastic measuring cups that are solvent safe, but I like to reuse the glass and keep the plastic out of the landfill.
Most of the time I use the Medium speed hardener, but the fast can be useful when we don't want to have decals dissolve, or we don't want out-gassing bubbles in old Bally playfield inserts (more on that latter). So you might buy a small can of Fast hardener to have on hand along with the Medium.
The clear contains super toxic Isocyanates (as the names implies, it contains cyanide) so you don't want to breathe it into your lungs. Isocyanates don't have a smell, so the company that makes the clear adds the most horrific smell to the formula. It smells like a mixture of Chlorine and Puke. If your chem-mask is leaking, you will know it!
Yes, I've seen the videos on Youtube with the guy shooting 2PAC with just a "10 cent dust mask", but that is the most insane thing I've ever seen. DON'T EVEN THINK ABOUT IT.
-
paint-respirator.jpg
Next you need the all important Chem-mask. You can get one at the store that sells you the clear for $29. Home Depot sells an Isocyanate rated mask, but it is not with the other dust masks, it's in the isle with the Mold abatement products. Don't ask me why.
You need to wear the Chem-mask anytime you spray clear, rattle can paint, work with solvents (Naphtha, Toluene, Lacquer Thinner...) or sand painted cabinets (commercial products continued to use lead paint well into the 2000s - you can safely assume any pinball cabinet is painted with lead paint). Do not sand pinball cabinets in your basement or garage - you will NEVER get the lead dust out.
Your Chem-mask only works if it is sealed to your face. That means you need to shave the day of the spraying. That means you people with fancy facial hair are going to need to shave the mask's pattern through it.
You need to keep the mask in it's thick zip-lock bag when not in use. The chem part of the mask lasts about 40 hours of use, and then you can start to smell the stench of the clear. Don't continue if you can smell the clear - stop and replace the cartridges!
-
If you start clearing playfields all the time, it makes sense to switch to a full hood that supplies outside air . The $350 cost of the hood will pay for itself in replacement cartridges and it is much more comfortable to wear. You can even wear it with a full beard.
SAR.JPG
Next you need some packs of Tackcloths. Tackcloths are Cheesecloth covered in resin that grabs even the smallest particles of dust. Even stuff that won't blow off with the Airgun, will be removed by the Tackcloth.
tackcloth.jpg
You will need some fine 500 or 600 grit sandpaper. You need to rough up the existing surface so the clear has some "tooth". Once the 1st layer is down, you can use finer 800 grit sandpaper between coats. It's that first coat that really needs some tooth.
800 grit.jpg
An Airgun or Blowgun attaches to your air compressor hose and lets you blow off fine dust out of the nooks, slots and holes. It is also great for blowing 40 years of dust and mold spores out of old cabinets (do this outside, not in your garage).
blowgun.jpg