[PSUBS-MAILIST] SeaQuestor progress

[David Colombo via Personal_Submersibles]

Hi Tim, the rig i have is built from a 300w computer power supply salvaged
from an old computer.  Attatched to it is a dc dimmer, and a duplex outlet
at 12v.
My cutting rigs consist of a  bow made from 1" pvc with sweeps vs short 90
coupler. I ran an extension chord thru the bow to each end with an internal
knot at the exit point. On each end is a eyebolt with an internal nut,
washer, wire, washer,  and nylock nut. The nicrome wire is pulled taught,
and wrapped thru the eye bolt. The bow dimensions is 12 x 40. The power
supply provides enough power for the nicrome. It cuts at about 12" per
minute. This rate gives a pretty smooth finish. The second rig is a pair of
pvc pipes about 16" long.  Any shorter without the dimmer, is two hot and
cuts to fast. Your arms are the tension, but lots of flexibility.
David

On Feb 23, 2019 9:45 PM, "T Novak via Personal_Submersibles" <
personal_submersibles at psubs.org> wrote:

Hey David,

Please show us a photo of your hot wire foam cutting rig.  It would be
interesting to see how you made and control it.

Tim



*From:* Personal_Submersibles [mailto:
personal_submersibles-bounces at psubs.org] *On Behalf Of *David Colombo via
Personal_Submersibles
*Sent:* Monday, February 18, 2019 10:12 PM
*To:* Personal Submersibles General Discussion <
personal_submersibles at psubs.org>
*Subject:* [PSUBS-MAILIST] SeaQuestor progress



Hi guys, I completed the hull rib stations on my keel form. Built my first
hot wire rig and cut the first piece of foam. The hot wire rig built from a
recylcled transformer from an old computer and pvc pipe. It works pretty
well, but discovered that i need to make a few modificatations to wire
connection points, but im happy with how well it works for my first
attempt. Placed the first piece of foam i sliced from the 8 ft block, and
then cut the shape of the ribs. I'll be taking videos as i go along.

Best Regards,

David
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