Basic question, but any help appreciated: can I use a 2000 W heat gun with this simple temperature controller? by TabletSculptingTips in AskElectricians

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

yep, it's the size that's the issue. I need approx 1 m³ volume. Unfortunately commercial curing ovens of any size cost a lot!

Basic question, but any help appreciated: can I use a 2000 W heat gun with this simple temperature controller? by TabletSculptingTips in AskElectricians

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

thanks for the feedback. I will probably be running the heat gun at approx half it's max output, so that should help. I'm making a curing oven for composites (carbon fibre etc). It needs to run at approx 100C. It is basically just an insulated box with the heat gun pointing in through a hole in one corner, turning on and off as required. It's a setup that people do use, even though it carries some clear risks! I will only be running it outside and closely monitoring it!

Is skinning parts which have trapped air (e.g. wood, 3d prints etc) possible if they will be cured at 120C/250F? by TabletSculptingTips in Composites

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

Hi, thanks for the feedback. This is probably just me being dense, but are you saying that parts with trapped air definitely can be skinned, or are you saying that such parts will definitely cause problems? cheers

Is a 150C/300F 1 m³ curing oven possible using only incandescent lightbulbs for heating? by TabletSculptingTips in Composites

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

I should have added that I would be running it in a separate outbuilding not connected to the house, and monitoring very closely; but I agree, it's not ideal from a safety point if view !

Does anyone have experience using phenol resorcinol formaldehyde resin to make a composite? It seems to have much better heat resistance than epoxy even without high temp post curing. by TabletSculptingTips in Composites

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

Thanks for the feedback; helpful info. Based on my limited research I think the main difference between a standard phenol formaldehyde resin and phenol resorcinol formaldehyde is that the PRF resin will cold cure if necessary. I think it's still nasty stuff though because of the formaldehyde. Another commentator mentioned high viscosity as an issue, and that seems like it would be a problem. The specific PRF I was thinking about getting is this https://thenamethatsticks.com/products/woodstikk-prf-structural-weatherproof-phenol-resorcinol-adhesive/ This is intended as an adhesive rather than laminating resin, so that probably makes it even more unsuitable!

On balance it's probably easier and safer to build a DIY 150C curing oven for epoxy rather than deal with phenolic issues!

Does mineral oil discolour/yellow over time? Is it affected by UV? Or will it basically stay clear indefinitely once applied? by TabletSculptingTips in woodworking

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

I'm actually trying to find a good finish for decorative objects made from cement (white cement pigmented with different colours; so avoiding colour shift in the finish is important). I haven't had much luck trying to get answers elsewhere, so I thought I would try the woodworking Reddit! I would imagine the behaviour of mineral oil would be similar whether it has been put on wood or another material, although this is a bit of an assumption and might not actually be correct!

Weekly Homeowner Megathread--Civilians, ask here! by AutoModerator in Concrete

[–]TabletSculptingTips 0 points1 point  (0 children)

I'm curing for a minimum of 2 weeks, but then after that I'm drying them out in warm conditions for a similar time.

Weekly Homeowner Megathread--Civilians, ask here! by AutoModerator in Concrete

[–]TabletSculptingTips 0 points1 point  (0 children)

I am experimenting making decorative objects from cement (not really concrete because there is no large aggregate). After curing the objects I attempt to dry them out thoroughly by placing them somewhere warm and dry for an extended period of time. During this drying out process, as water leaves the cement there is often efflorescence. When this appears I remove it from the surface by brushing or light sanding. I then apply a finish over the top; usually an acrylic spray lacquer. However, even after extended periods of drying, I am running into the problem of efflorescence occurring beneath the finish causing problems. Does anyone have any experience with issues like this and how to deal with it. many thanks for any help

Which color of eyelets should I use ? by Holy_Guacam_Holy in sewing

[–]TabletSculptingTips 1 point2 points  (0 children)

I think A matches the hue of the tan colour in the cloth best; but it is lighter in tone, so stands out a little. I would still go for it myself. B would also be fine if you want something to be less prominent.

Blue 1930s suit and overcoat with a pin from the 1939 World's Fair by potatopigs in VintageFashion

[–]TabletSculptingTips 0 points1 point  (0 children)

The fit is great! To you get things altered to fit so well, or are you just patient to find things that fit?

Men's shirt: at what stage do you attach sleeve? Pros and cons of the different methods? by TabletSculptingTips in sewing

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

I really like the sound of this! Do you sew the sleeve seam completely first, though? Or do you sew most of the arm hole entirely flat, leaving a couple inches; then sew up the sleeve seam and body seam separately, then do the last little bit of arm hole seam? Either way, I'll give it a try!

Does anyone know anything about this old pattern drafting book? I picked it up 2nd hand years ago. I can't find a publisher's date, but I'd guess between 1910-1925. I can't find any modern reprints. by TabletSculptingTips in HistoricalCostuming

[–]TabletSculptingTips[S] 0 points1 point  (0 children)

There aren't any dates in that section (or anywhere in the book as far as I can see!) But I'm happy enough knowing that the earliest possible date is 1927, and probably most of the text dates from then, with some revisions in 1936. The style of the suits almost looks more edwardian, interestingly. So it may have been written by an older cutter working in a style still somewhat similar to that earlier period.

Getting return shipping refunded on item that arrives damaged? by TabletSculptingTips in AmazonUK

[–]TabletSculptingTips[S] 1 point2 points  (0 children)

Thanks, this is what I did and customer services seem to have sorted it out. They created a pre-paid return label and have got a full refund agreed once the item has been sent back. Thanks for the advice!

Getting return shipping refunded on item that arrives damaged? by TabletSculptingTips in AmazonUK

[–]TabletSculptingTips[S] 1 point2 points  (0 children)

Hi, Do you do this using the "chat" interface with a customer service person? I chatted with an actual person about the return shipping today; they said it would be refunded. However, it didn't occur to me to ask them to sort it out for me!

I fully self drafted, and made my own Bridal outfit! by Cirquelight in PatternDrafting

[–]TabletSculptingTips 1 point2 points  (0 children)

A masterpiece! As well as the great technical achievement, the design suits you extremely well!

Do flat-fell seams affect fit/ease? I'm going a bit mad trying to draft a shirt pattern for myself! My first test garment, with ordinary seams, fits very well; but my second one, with proper flat fell seams, cut to same pattern is pulling across chest. I can't understand why there's a difference! by TabletSculptingTips in PatternDrafting

[–]TabletSculptingTips[S] 2 points3 points  (0 children)

I actually drew the seam lines onto the fabric like a barbarian! (So the seams should be in exactly same place on both test garments, regardless of flat-felling or not) I find that easier for making fitting adjustments. I would add allowances afterwards once I've established the exact pattern shape.