Tool arm fix?

I have the script before it, but that bit works fine. If need be I can post it here. I have scripted the position of an arm on a tool:

wait (1)
while wait do
for i=1, 5 do
weld1.C1 = CFrame.new(0.3, 0.05, 0.1) * CFrame.fromEulerAnglesXYZ(math.rad(-26), 0, math.rad(0)) -- this bit is supposed to add that amount 5 times, but instead it just makes it that angle that five times
end 
end

In the end it is supposed to be :

weld1.C1 = CFrame.new(1.5, 0.3, 0.5) * CFrame.fromEulerAnglesXYZ(math.rad(-105), 0, math.rad(0)) -- Left

Any help? Thanks.