If I were in your position I would wonder if the afford it justified –maybe you can charge a fee as the customer has not given you the necessary file?!
If you want accurate parts in the end, then forget the scanning idea. With a scan you won’t get any vector data and then you would have to vectorize which can lead to adulterations and inaccurate results. Hence a lot of re-work might be necessary.
I would draw it again via CAD if you need a clear/error free data basis- as hard as it might sounds!
<b>Gruß / Regards</b><br /><i><b>CNCFanatiker</b></i><br />AdminCrew<br /><br />Wenn wir immer das tun was wir können, dann bleiben wir immer das was wir sind.<br />If we always this act what we are able to do, then we always remain what we are.