WEBVTT 00:26.872 --> 00:29.083 - [Camera Man] Again. 00:29.083 --> 00:29.916 A couple of seconds, 00:31.428 --> 00:33.261 all right, here we go 00:34.240 --> 00:36.630 - Okay, we've now gotten the removed sash 00:36.630 --> 00:41.570 down to a paint booth for separate workspace on our campus. 00:41.570 --> 00:44.230 And our main focus now is to remove the paint 00:44.230 --> 00:46.320 from the sashes for two purpose, 00:46.320 --> 00:47.610 one for operability 00:47.610 --> 00:49.710 so the sash will slide properly, 00:49.710 --> 00:51.860 and also after a certain amount of paint build up 00:51.860 --> 00:53.520 is simply it doesn't take another coat of paint 00:53.520 --> 00:54.830 very effectively. 00:54.830 --> 00:57.860 The most opportune time to remove it is now throughout flat 00:57.860 --> 00:59.830 as it will never happen again, basically 00:59.830 --> 01:01.320 except maybe once every hundred years 01:01.320 --> 01:05.360 he might remove them for repairs once more. 01:05.360 --> 01:07.183 You have several methods available. 01:08.750 --> 01:11.510 To my right is a self encrusting stripping material, 01:11.510 --> 01:13.493 that is to say forms its own film. 01:14.739 --> 01:17.150 Is best to left from 24 to 48 hours 01:17.150 --> 01:19.830 and eats through multiple layers of paint. 01:19.830 --> 01:22.440 On this side we'll show you the tool in a moment 01:22.440 --> 01:24.420 is stripping by heat method. 01:24.420 --> 01:25.840 In this case, let's say 01:25.840 --> 01:29.590 it's a heat gun with variable temperatures. 01:29.590 --> 01:32.270 If you get over 700 degrees, you'll will be vaporizing, 01:32.270 --> 01:33.430 Let any lead in the paint 01:33.430 --> 01:34.520 which you're trying to avoid, 01:34.520 --> 01:37.380 and so we keep the temperature lower on this one. 01:37.380 --> 01:40.760 It's a, an appropriate tool for non-toxic purposes, 01:40.760 --> 01:42.460 although as with any of these methods 01:42.460 --> 01:45.553 you should always check with your Safety Officer 01:45.553 --> 01:48.030 or Local State or National Agency. 01:48.030 --> 01:51.470 To my left is when sash has been taken to a hot tank 01:51.470 --> 01:53.600 which will show for close-up shortly. 01:53.600 --> 01:54.840 And to the right of that, 01:54.840 --> 01:57.790 is one which has been stripped and completed. 01:57.790 --> 01:59.773 Why don't we try the heat gun first? 02:00.681 --> 02:02.730 (heat gun blowing) 02:02.730 --> 02:04.680 Can see here's our temperature control. 02:05.540 --> 02:07.880 I gotta just, not at maximum 02:11.390 --> 02:13.500 You wanna avoid getting it too close to the glass 02:13.500 --> 02:16.513 because the heat isn't sufficient enough to crack it. 02:18.590 --> 02:21.040 Keep it on long enough about an inch or two away. 02:23.270 --> 02:25.580 And shortly, we'll be getting the bubble and blister. 02:25.580 --> 02:27.369 You see it's not soft enough yet. 02:27.369 --> 02:30.750 (heat gun blowing) 02:30.750 --> 02:32.793 If you can see here, we're getting bubbles. 02:37.410 --> 02:38.503 Now, you know, 02:40.000 --> 02:41.270 we'll soften up the scrape off, 02:41.270 --> 02:42.333 down to bare wood. 02:43.380 --> 02:45.463 heat guns or any heat source, 02:46.330 --> 02:48.340 best work on multiple layers of paint. 02:48.340 --> 02:49.350 The more paint, the better. 02:49.350 --> 02:51.480 If you only have one or two layers 02:51.480 --> 02:53.430 there's probably a little easier reason to strip that. 02:53.430 --> 02:56.053 But if you're going to, this isn't the best approach. 02:58.680 --> 03:00.400 Because it will keep it so fast, 03:00.400 --> 03:02.080 the wood will char. 03:02.080 --> 03:03.080 With a lot of paint, 03:06.270 --> 03:07.361 it's better. 03:07.361 --> 03:10.278 (heat gun blowing) 03:12.618 --> 03:14.070 As you can see, 03:14.070 --> 03:15.373 - [Camera Man] Stop right there. 03:15.373 --> 03:16.590 - mhh 03:16.590 --> 03:19.103 - [Camera Man] Okay, two seconds after right now. 03:20.120 --> 03:21.470 - Okay, and as you can see, 03:22.975 --> 03:25.860 it kind of will go down to bare wood 03:25.860 --> 03:28.260 and it gives you an easily disposable form 03:28.260 --> 03:29.963 of paint and debris. 03:31.470 --> 03:33.520 Initially, if you try to take it off of your hands 03:33.520 --> 03:34.353 I'll get your hands on it. 03:34.353 --> 03:36.210 This will be far too hot to handle. 03:36.210 --> 03:37.600 This gives you a good clean surface, 03:37.600 --> 03:40.220 you can either sand lightly before painting 03:40.220 --> 03:43.170 or put a small amount of solvent on to get any residue off. 03:44.160 --> 03:45.990 Now, over here, 03:45.990 --> 03:48.420 this is the self-drying 03:48.420 --> 03:50.930 or should I say self-film forming paint remover 03:50.930 --> 03:52.720 which I put on a few hours ago. 03:52.720 --> 03:56.180 It's best left from up between 12 and 48 hours. 03:56.180 --> 03:57.587 Depends how much paint you're dealing with, 03:57.587 --> 03:59.500 and the types of paint. 03:59.500 --> 04:03.360 Now this space here, I'll show this application of it. 04:03.360 --> 04:06.140 You can put it on an eighth of an inch thick or more 04:08.110 --> 04:11.160 much more than a quarter inch you're probably wasting it. 04:11.160 --> 04:12.510 But smear down with a knife 04:13.460 --> 04:14.720 and then leave it and let it sit. 04:14.720 --> 04:17.960 There are some materials made of this type 04:17.960 --> 04:20.140 which require the plastic or paper over them 04:20.140 --> 04:22.480 in order to prevent the material from drying out 04:22.480 --> 04:24.610 this particular one does not. 04:24.610 --> 04:26.816 So we can go back a little, 04:26.816 --> 04:28.860 (mummers) 04:28.860 --> 04:30.020 someone might notice 04:30.020 --> 04:32.103 - [Camera Man] Two seconds after now. 04:33.310 --> 04:34.330 - Now this material has been on 04:34.330 --> 04:35.640 for about two or three hours, 04:35.640 --> 04:38.070 So let's see how far it's gone, 04:38.070 --> 04:39.470 even in that amount of time. 04:40.371 --> 04:41.483 And as you can see, 04:43.610 --> 04:45.070 it's eaten through about the top two 04:45.070 --> 04:46.373 or three layers of paint, 04:47.490 --> 04:49.150 not sufficient for our purposes 04:49.150 --> 04:51.470 since we want to completely stripped down, 04:51.470 --> 04:52.730 but by tomorrow morning, 04:52.730 --> 04:54.420 the rest of this will be stripped down pretty much 04:54.420 --> 04:55.960 to bare wood. 04:55.960 --> 05:00.140 On the now on the exterior side of this 05:00.140 --> 05:02.460 the paint is far more tenacious 05:02.460 --> 05:04.550 and, and its ability to resist the stripper, 05:04.550 --> 05:05.780 and resist the heat. 05:06.680 --> 05:07.603 As you can see, 05:09.290 --> 05:10.620 on the reverse side of this one, 05:10.620 --> 05:12.720 this is an interior which has been stripped 05:12.720 --> 05:15.630 which was initially either varnished or shellacked 05:15.630 --> 05:17.180 which makes it a lot easier to get the paint 05:17.180 --> 05:19.860 off by any method, but particularly with the heat. 05:19.860 --> 05:22.203 On our exterior side, Oops! 05:24.230 --> 05:25.130 - [Camera Man] And 05:25.994 --> 05:27.220 three, 05:27.220 --> 05:28.053 go. 05:29.370 --> 05:30.203 - Like this? 05:30.203 --> 05:31.117 - [Camera Man] Yeah 05:31.117 --> 05:32.392 - On our reverse side, 05:32.392 --> 05:33.784 (mumbles) 05:33.784 --> 05:34.617 sorry 05:34.617 --> 05:36.784 (mumbles) 05:42.063 --> 05:45.146 - [Camera Man] Keep going, keep going 05:51.823 --> 05:55.820 It's going two seconds after right now. 05:55.820 --> 05:57.113 - I wanna reverse side. 05:59.570 --> 06:02.060 This had probably an equal number of layers 06:02.060 --> 06:04.930 of paint as the interior that accepted exterior paint 06:04.930 --> 06:08.960 being a tougher material for weather resistant purposes 06:08.960 --> 06:11.150 and such as a much more difficult to get off. 06:11.150 --> 06:13.680 Also since this being a shipyard that had 06:13.680 --> 06:16.210 an old battleship gray enamel on it 06:16.210 --> 06:17.900 which has been almost impervious to some 06:17.900 --> 06:20.820 of those strippers that were used in any event for this 06:20.820 --> 06:23.670 the heat is a very very effective means of paint removal. 06:24.840 --> 06:25.883 A third method, 06:28.570 --> 06:31.253 is sending the sash, or it would work out to a tank. 06:34.960 --> 06:38.750 Dipping tanks or either cold tanks or hot tanks 06:38.750 --> 06:42.890 cold tanks being essentially a dumpster size tank 06:42.890 --> 06:45.070 full of cans stripper or similar material 06:45.070 --> 06:48.220 and hot tank being a Oh 06:48.220 --> 06:51.310 almost a lie based heated 06:51.310 --> 06:53.390 methodology in very hot water 06:53.390 --> 06:55.610 for dipping the cold tank being the more benign 06:55.610 --> 06:56.860 of the two. 06:56.860 --> 06:59.070 In this case, because the tank had so much trouble 06:59.070 --> 07:00.490 with any resistance from the paint, 07:00.490 --> 07:01.350 they both cold dip 07:01.350 --> 07:03.393 and briefly hot that 07:03.393 --> 07:05.510 apparently even the brief hot tip 07:05.510 --> 07:07.910 wasn't sufficient storing them for longer periods of time. 07:07.910 --> 07:10.493 As you can see, the exterior came out fairly clean. 07:11.800 --> 07:12.803 The interior, 07:16.160 --> 07:16.993 was also clean 07:16.993 --> 07:19.650 but you have quite a bit of the grain has been raised 07:19.650 --> 07:21.020 which will also be sanded out 07:21.020 --> 07:22.533 and cleaned prior to painting. 07:23.670 --> 07:26.310 Their scraping tools and such did some digging-in 07:26.310 --> 07:29.060 because there was so much trouble getting it clean. 07:29.060 --> 07:32.000 This is repairable, but optimally 07:32.000 --> 07:33.040 it wouldn't have gone through this, 07:33.040 --> 07:35.570 It would have been able to soak in a cold tank 07:35.570 --> 07:37.910 perhaps for a longer period of time and left it. 07:37.910 --> 07:39.240 If you choose this method, 07:39.240 --> 07:41.470 i would recommend you try a sample first 07:41.470 --> 07:42.740 either a smaller piece of woodwork 07:42.740 --> 07:43.900 or a single sash 07:44.820 --> 07:46.370 because you're success will depend 07:46.370 --> 07:48.940 on both the materials used by your stripper 07:48.940 --> 07:51.940 and the experience level of the person doing the work, 07:51.940 --> 07:52.893 him or herself. 07:54.380 --> 07:55.663 Our last sash, 08:00.030 --> 08:01.380 is a little more completed. 08:03.250 --> 08:04.710 This one went to the hot tank 08:05.810 --> 08:07.380 and I've sanded out and prime 08:07.380 --> 08:09.180 to put a first coat of paint on. 08:09.180 --> 08:11.130 I will get new glass. 08:11.130 --> 08:12.860 Well, this is fairly clean, it's smooth, 08:12.860 --> 08:14.870 and this is certainly a far more acceptable 08:14.870 --> 08:16.410 than the sash that we began with, 08:16.410 --> 08:18.860 which with all the paint build up, 08:18.860 --> 08:21.400 this is the level you're looking for 08:22.590 --> 08:24.710 It's a, it's a much more longevity 08:24.710 --> 08:28.330 on your future painting and, and does restore 08:28.330 --> 08:30.933 to its original condition as best as possible.