1
00:00:08,240 --> 00:00:12,160
So this video is all about sawing

2
00:00:12,160 --> 00:00:14,420
and sawing shapes out

3
00:00:14,420 --> 00:00:18,340
and how to use the piercing saw.

4
00:00:18,340 --> 00:00:22,260
So what we use is a piercing

5
00:00:22,260 --> 00:00:25,080
saw and piercing saw frame.

6
00:00:25,080 --> 00:00:29,000
And we look at the blade first

7
00:00:29,000 --> 00:00:31,820
and they're generally quite small.

8
00:00:31,820 --> 00:00:33,440
This is quite a chunky one, 

9
00:00:33,440 --> 00:00:37,620
but we try and use the smallest we can

10
00:00:37,620 --> 00:00:39,540
because it's easy to go around corners 

11
00:00:39,540 --> 00:00:42,320
and make complicated shapes.

12
00:00:42,320 --> 00:00:45,500
But we need to have the right blade

13
00:00:45,500 --> 00:00:47,000
for the thickness of metal. 

14
00:00:47,000 --> 00:00:49,420
This is about 1mm thick

15
00:00:49,420 --> 00:00:52,000
so a blade that is number

16
00:00:52,000 --> 00:00:54,140
four would be the right size,

17
00:00:54,140 --> 00:00:56,300
but this one's a lot coarser

18
00:00:56,300 --> 00:00:58,800
so we can see what we're doing.

19
00:00:58,800 --> 00:01:02,020
And if you hold the blade by one end

20
00:01:02,020 --> 00:01:04,880
and gently run your finger up the blade,

21
00:01:04,880 --> 00:01:06,660
you'll feel that one side 

22
00:01:06,660 --> 00:01:08,800
has got sharp teeth on it

23
00:01:08,820 --> 00:01:11,980
and they just catch your skin a bit

24
00:01:11,980 --> 00:01:13,580
and so the teeth 

25
00:01:13,580 --> 00:01:15,560
should be facing towards you. 

26
00:01:15,560 --> 00:01:18,340
And as you've run your finger up,

27
00:01:18,340 --> 00:01:20,340
it should catch your finger. 

28
00:01:20,340 --> 00:01:22,720
So that's the teeth pointing downwards.

29
00:01:22,720 --> 00:01:24,300
That's catching your finger, 

30
00:01:24,300 --> 00:01:25,900
and that's the way 

31
00:01:25,900 --> 00:01:28,380
it fits into the saw frame.

32
00:01:28,380 --> 00:01:32,000
So the saw frame has two butterfly nuts,

33
00:01:32,000 --> 00:01:34,160
and as you loosen the nuts off, 

34
00:01:34,160 --> 00:01:35,640
it creates a little gap 

35
00:01:35,640 --> 00:01:37,520
between the nut and the frame, 

36
00:01:37,520 --> 00:01:39,120
and the blade is 

37
00:01:39,120 --> 00:01:40,400
going to be put in there. 

38
00:01:40,400 --> 00:01:42,140
But they've all got a little 

39
00:01:42,140 --> 00:01:44,940
tang on the end, a little

40
00:01:44,940 --> 00:01:46,740
bit on the end. 

41
00:01:46,740 --> 00:01:48,020
And really, 

42
00:01:48,020 --> 00:01:50,520
anything I can think that is for

43
00:01:50,520 --> 00:01:53,440
is putting it on the bench

44
00:01:53,440 --> 00:01:55,800
so you can hold it against the bench.

45
00:01:55,800 --> 00:01:57,920
It doesn't slip off and gives

46
00:01:57,920 --> 00:01:59,420
you two hands spare. 

47
00:01:59,420 --> 00:02:01,620
Don't need to put much pressure on there,

48
00:02:01,620 --> 00:02:03,920
but it just enables you to sort of

49
00:02:03,920 --> 00:02:06,660
put the blade in to one end.

50
00:02:06,660 --> 00:02:07,500
It doesn't matter. 

51
00:02:07,500 --> 00:02:09,720
I always put it in the handle end, 

52
00:02:09,720 --> 00:02:11,460
but it doesn't make any difference 

53
00:02:11,460 --> 00:02:13,400
if you put it the other way around. 

54
00:02:13,400 --> 00:02:15,020
And then line it up 

55
00:02:15,020 --> 00:02:17,180
with the nut at the top

56
00:02:17,180 --> 00:02:19,400
so it's ready to be tightened up.

57
00:02:19,400 --> 00:02:20,520
And what we need to do 

58
00:02:20,520 --> 00:02:21,380
is put a little bit of 

59
00:02:21,380 --> 00:02:23,760
tension onto the blade. 

60
00:02:23,760 --> 00:02:28,040
So what we'll do is just push the frame

61
00:02:28,040 --> 00:02:31,120
into the bench and that

62
00:02:31,120 --> 00:02:32,120
because it's a little 

63
00:02:32,120 --> 00:02:34,560
bit springy the frame, 

64
00:02:34,560 --> 00:02:36,360
gives it tension 

65
00:02:36,360 --> 00:02:41,540
and you can hear it gives it a nice ring.

66
00:02:41,540 --> 00:02:45,020
OK, so and that's ready to go.

67
00:02:45,020 --> 00:02:46,360
If it's too loose 

68
00:02:46,360 --> 00:02:48,560
if you're trying to 

69
00:02:48,560 --> 00:02:49,880
saw a straight line, it's 

70
00:02:49,880 --> 00:02:51,680
going to wander around 

71
00:02:51,680 --> 00:02:53,960
so and quite likely to break.

72
00:02:53,960 --> 00:02:56,300
Right so we're ready to saw

73
00:02:56,300 --> 00:02:57,760
and we're just going to 

74
00:02:57,760 --> 00:02:59,020
cut straight across 

75
00:02:59,020 --> 00:03:01,400
our little practice piece. 

76
00:03:01,400 --> 00:03:04,200
So the saw is just about ready,

77
00:03:04,200 --> 00:03:07,000
but to help us do the sawing

78
00:03:07,000 --> 00:03:09,800
a little bit of wax, any wax

79
00:03:09,800 --> 00:03:11,800
but a candle or beeswax, 

80
00:03:11,800 --> 00:03:13,800
a little bit of wax 

81
00:03:13,800 --> 00:03:17,000
just helps it to saw a bit easier.

82
00:03:17,000 --> 00:03:19,400
Now it's one of those techniques

83
00:03:19,400 --> 00:03:21,000
you need to relax 

84
00:03:21,000 --> 00:03:22,580
because the blade tends 

85
00:03:22,580 --> 00:03:27,040
they do break quite easily. 

86
00:03:27,040 --> 00:03:29,600
But so if you get sort of

87
00:03:29,600 --> 00:03:30,880
stressed and trying to 

88
00:03:30,880 --> 00:03:35,520
push the saw forward, then

89
00:03:35,520 --> 00:03:37,120
that's when the blade is going to break. 

90
00:03:37,120 --> 00:03:39,160
So you've sort of got to relax.

91
00:03:39,160 --> 00:03:42,400
So hold the piece of metal on the peg

92
00:03:42,400 --> 00:03:45,260
and start as if you sawing a log

93
00:03:45,260 --> 00:03:49,160
and it'll start cutting in quite quickly

94
00:03:49,160 --> 00:03:52,160
and as soon as it cuts in, 

95
00:03:52,160 --> 00:03:54,020
then go straight up and down. 

96
00:03:54,020 --> 00:03:55,080
And the reason for that 

97
00:03:55,080 --> 00:03:56,240
is that you're cutting 

98
00:03:56,240 --> 00:03:57,840
the thinnest bit of metal. 

99
00:03:57,840 --> 00:03:59,200
If you carried on like that, 

100
00:03:59,200 --> 00:04:00,100
it wouldn't be too bad 

101
00:04:00,100 --> 00:04:01,520
if you were going straight on 

102
00:04:01,520 --> 00:04:03,000
in a straight line. 

103
00:04:03,000 --> 00:04:04,880
But if you wanted to turn a corner, 

104
00:04:04,880 --> 00:04:07,340
it would just jam the blade. 

105
00:04:07,340 --> 00:04:10,160
So go straight up and down 

106
00:04:10,160 --> 00:04:12,500
and the blade 

107
00:04:12,500 --> 00:04:14,180
cuts forward and moves forward 

108
00:04:14,180 --> 00:04:15,420
all on its own really, 

109
00:04:15,420 --> 00:04:18,140
you don't need to push it. 

110
00:04:18,140 --> 00:04:19,720
You just supplying 

111
00:04:19,720 --> 00:04:21,220
that sort of up and down

112
00:04:25,160 --> 00:04:27,500
movement and 

113
00:04:27,500 --> 00:04:31,460
you soon go straight across. 

114
00:04:35,880 --> 00:04:36,640
And if you get to 

115
00:04:36,640 --> 00:04:40,960
the end, just saw into the peg,

116
00:04:40,960 --> 00:04:42,000
the pegs are made 

117
00:04:42,000 --> 00:04:43,440
for supporting your work 

118
00:04:43,440 --> 00:04:45,560
and so you can sort of saw into them 

119
00:04:45,560 --> 00:04:47,640
and then we saw straight across. 

120
00:04:47,640 --> 00:04:50,440
So quite simple. 

121
00:04:50,440 --> 00:04:54,760
So then we might want to do a shape.

122
00:04:54,760 --> 00:04:56,480
So if we get a little 

123
00:04:56,480 --> 00:04:57,760
practice piece again 

124
00:04:57,760 --> 00:05:00,480
and then a bit of masking tape,

125
00:05:02,620 --> 00:05:04,480
if you've got a pattern in mind, 

126
00:05:04,480 --> 00:05:05,140
you could perhaps 

127
00:05:05,140 --> 00:05:09,560
print it onto a sticky

128
00:05:09,560 --> 00:05:11,500
label or an address 

129
00:05:11,500 --> 00:05:14,000
label or something then 

130
00:05:14,000 --> 00:05:15,800
and then stick it down to the metal 

131
00:05:15,800 --> 00:05:19,240
and then you can follow it with your saw.

132
00:05:19,240 --> 00:05:23,080
But we'll just draw a little heart shape

133
00:05:23,080 --> 00:05:24,620
I think for the start. 

134
00:05:24,620 --> 00:05:26,540
That's not bad as it's 

135
00:05:26,540 --> 00:05:28,440
coming up to Valentine's Day 

136
00:05:28,440 --> 00:05:30,740
soon we'll just do like that.

137
00:05:33,280 --> 00:05:35,680
Okay, so we've got a line to follow,

138
00:05:35,680 --> 00:05:37,420
and this time we've got 

139
00:05:37,420 --> 00:05:39,480
a sort of a little V-shape

140
00:05:39,480 --> 00:05:41,200
we've got to cut into 

141
00:05:41,200 --> 00:05:42,320
and it's sometimes 

142
00:05:42,320 --> 00:05:45,280
difficult to turn corners. 

143
00:05:45,280 --> 00:05:46,860
So 

144
00:05:46,860 --> 00:05:48,040
again on the peg 

145
00:05:48,040 --> 00:05:49,620
and a little bit of wax 

146
00:05:49,620 --> 00:05:52,820
just to help things along.

147
00:05:52,820 --> 00:05:55,080
So we're going to start

148
00:05:55,080 --> 00:05:58,220
cutting out this heart.

149
00:05:58,220 --> 00:06:01,360
So now we're starting to turn corners.

150
00:06:01,360 --> 00:06:04,960
What we've got to do is gradually turn,

151
00:06:04,960 --> 00:06:08,560
if you turn too quickly, the blade traps.

152
00:06:08,560 --> 00:06:11,700
So you have to sort of saw

153
00:06:11,700 --> 00:06:14,400
and turn as you go along.

154
00:06:19,880 --> 00:06:25,280
And with the sort of v bit of the heart

155
00:06:25,280 --> 00:06:26,380
we could turn around, 

156
00:06:26,380 --> 00:06:29,420
but we might end up with a sort of

157
00:06:29,420 --> 00:06:30,440
around a bit, but 

158
00:06:30,440 --> 00:06:32,820
we want it nice and neatly 

159
00:06:32,820 --> 00:06:34,840
so you can sort of

160
00:06:34,840 --> 00:06:36,760
back up a little bit. 

161
00:06:36,760 --> 00:06:38,540
Let's see if we can do it. 

162
00:06:38,540 --> 00:06:39,800
There we go. 

163
00:06:42,960 --> 00:06:46,880
And then if you sort of gradually turn

164
00:06:46,880 --> 00:06:51,080
and head towards the bottom of the v

165
00:06:51,080 --> 00:06:54,480
and cut that little piece out,

166
00:06:54,480 --> 00:06:56,280
and that gives you a nice, sharp 

167
00:06:56,280 --> 00:06:59,100
sort of v shape certainly of this heart,

168
00:07:00,980 --> 00:07:04,280
and then we'll follow it around. 

169
00:07:11,700 --> 00:07:17,260
So it's all about

170
00:07:17,260 --> 00:07:20,640
sort of taking corners slowly

171
00:07:20,640 --> 00:07:23,320
and not forcing the blade.

172
00:07:23,320 --> 00:07:27,220
It will go quite quickly,

173
00:07:27,220 --> 00:07:29,220
but if you try and force that,

174
00:07:29,220 --> 00:07:31,500
then it will it'll jam

175
00:07:33,720 --> 00:07:36,660
and the blade will break. 

176
00:07:43,160 --> 00:07:45,500
So we've got half a 

177
00:07:45,500 --> 00:07:48,500
little heart cut out. 

178
00:07:48,500 --> 00:07:50,820
So another little 

179
00:07:50,820 --> 00:07:54,000
sawing technique is that we can

180
00:07:54,000 --> 00:07:55,680
make chained links with it 

181
00:07:55,680 --> 00:07:57,120
and we might with our heart. 

182
00:07:57,120 --> 00:07:58,640
We might want to drill a hole 

183
00:07:58,640 --> 00:08:00,440
and put a little jump ring in 

184
00:08:00,440 --> 00:08:02,520
so we can make a chain,

185
00:08:02,520 --> 00:08:04,720
and to make the chain.

186
00:08:04,720 --> 00:08:06,440
We need some wire. 

187
00:08:06,440 --> 00:08:09,440
And these are called jump link mandrels

188
00:08:09,440 --> 00:08:11,160
and they're steel bars 

189
00:08:11,160 --> 00:08:14,600
with a little groove put in the end.

190
00:08:14,600 --> 00:08:17,620
But you could use a knitting needle

191
00:08:17,620 --> 00:08:21,060
or a pencil or a bit of dowel

192
00:08:21,060 --> 00:08:24,600
and it works just the same.

193
00:08:24,600 --> 00:08:27,060
These are just a bit more 

194
00:08:27,060 --> 00:08:28,280
chunky. 

195
00:08:28,280 --> 00:08:32,540
So the wire fits within the little

196
00:08:32,540 --> 00:08:34,240
groove at the top. 

197
00:08:34,240 --> 00:08:36,640
And 

198
00:08:36,640 --> 00:08:40,020
you turn the wire 

199
00:08:40,020 --> 00:08:42,240
and 

200
00:08:42,240 --> 00:08:43,520
turn the handle, 

201
00:08:43,520 --> 00:08:45,200
so the wire becomes 

202
00:08:45,200 --> 00:08:51,460
wrapped around the jump link mandrel.

203
00:08:51,460 --> 00:08:55,580
We'll just do a couple of links.

204
00:08:55,580 --> 00:08:58,620
Try and keep the coils

205
00:08:58,620 --> 00:09:01,040
so it fits together

206
00:09:01,040 --> 00:09:03,460
or is quite tight

207
00:09:03,460 --> 00:09:07,100
so that if it were loose,

208
00:09:07,100 --> 00:09:09,520
they would move around

209
00:09:09,520 --> 00:09:13,160
and be hard to saw OK.

210
00:09:13,160 --> 00:09:16,200
And the tricky bit

211
00:09:16,200 --> 00:09:21,040
is just holding the jump link mandrel

212
00:09:21,040 --> 00:09:25,920
but it fits nicely in the peg.

213
00:09:25,920 --> 00:09:28,260
And then you put the saw 

214
00:09:28,260 --> 00:09:30,120
between the little grooves 

215
00:09:30,120 --> 00:09:33,580
of there and nice and gently

216
00:09:33,580 --> 00:09:34,880
keep it under control 

217
00:09:34,880 --> 00:09:37,500
because your fingers are quite near 

218
00:09:37,500 --> 00:09:40,800
and then we're saw down,

219
00:09:42,480 --> 00:09:44,820
so keep the saw at an angle.

220
00:09:46,720 --> 00:09:53,560
And work your way down

221
00:09:53,560 --> 00:09:57,840
and you end with

222
00:09:57,840 --> 00:09:59,900
lots of little links 

223
00:09:59,900 --> 00:10:01,360
and they're ready to solder, 

224
00:10:01,360 --> 00:10:04,960
they've got really neat ends.

225
00:10:04,960 --> 00:10:06,280
So there'll be a good join 

226
00:10:06,280 --> 00:10:08,620
once they're put together,

227
00:10:08,620 --> 00:10:10,280
they'll be easily soldered 

228
00:10:10,280 --> 00:10:12,540
and it would make a nice little chain 

229
00:10:12,540 --> 00:10:15,540
or a little link for the heart.